Merge pull request #12676 from thonsi/dev

Fix initial numbering of frames in TTML to SRT converter

.github/CONTRIBUTING.md

@@ -6,7 +6,7 @@ NewPipe contribution guidelines
 ## Crash reporting
 
 Report crashes through the **automated crash report system** of NewPipe.
-This way all the data needed for debugging is included in your bugreport for GitHub.
+This way all the data needed for debugging is included in your bug report for GitHub.
 You'll see *exactly* what is sent, be able to add **your comments**, and then send it.
 
 ## Issue reporting/feature requests

.github/workflows/build-release-apk.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           cache: 'gradle'
 
       - name: "Build release APK"

.github/workflows/ci.yml

@@ -72,8 +72,8 @@ jobs:
           - api-level: 21
             target: default
             arch: x86
-          - api-level: 33
-            target: google_apis # emulator API 33 only exists with Google APIs
+          - api-level: 35
+            target: default
             arch: x86_64
 
     permissions:
@@ -111,6 +111,7 @@ jobs:
           path: app/build/reports/androidTests/connected/**
 
   sonar:
+    if: ${{ false }} # the key has expired and needs to be regenerated by the sonar admins
     runs-on: ubuntu-latest
 
     permissions:

.github/workflows/image-minimizer.js

@@ -32,12 +32,12 @@ module.exports = async ({github, context}) => {
     }
 
     // Regex for finding images (simple variant) ![ALT_TEXT](https://*.githubusercontent.com/<number>/<variousHexStringsAnd->.<fileExtension>)
-    const REGEX_USER_CONTENT_IMAGE_LOOKUP = /\!\[(.*)\]\((https:\/\/[-a-z0-9]+\.githubusercontent\.com\/\d+\/[-0-9a-f]{32,512}\.(jpg|gif|png))\)/gm;
-    const REGEX_ASSETS_IMAGE_LOCKUP = /\!\[(.*)\]\((https:\/\/github\.com\/[-\w\d]+\/[-\w\d]+\/assets\/\d+\/[\-0-9a-f]{32,512})\)/gm;
+    const REGEX_USER_CONTENT_IMAGE_LOOKUP = /\!\[([^\]]*)\]\((https:\/\/[-a-z0-9]+\.githubusercontent\.com\/\d+\/[-0-9a-f]{32,512}\.(jpg|gif|png))\)/gm;
+    const REGEX_ASSETS_IMAGE_LOOKUP = /\!\[([^\]]*)\]\((https:\/\/github\.com\/(?:user-attachments\/assets|[-\w\d]+\/[-\w\d]+\/assets\/\d+)\/[\-0-9a-f]{32,512})\)/gm;
 
     // Check if we found something
     let foundSimpleImages = REGEX_USER_CONTENT_IMAGE_LOOKUP.test(initialBody)
-        || REGEX_ASSETS_IMAGE_LOCKUP.test(initialBody);
+        || REGEX_ASSETS_IMAGE_LOOKUP.test(initialBody);
     if (!foundSimpleImages) {
         console.log('Found no simple images to process');
         return;
@@ -52,7 +52,7 @@ module.exports = async ({github, context}) => {
 
     // Try to find and replace the images with minimized ones
     let newBody = await replaceAsync(initialBody, REGEX_USER_CONTENT_IMAGE_LOOKUP, minimizeAsync);
-    newBody = await replaceAsync(newBody, REGEX_ASSETS_IMAGE_LOCKUP, minimizeAsync);
+    newBody = await replaceAsync(newBody, REGEX_ASSETS_IMAGE_LOOKUP, minimizeAsync);
     
     if (!wasMatchModified) {
         console.log('Nothing was modified. Skipping update');

README.md

@@ -1,20 +1,26 @@
-<h3 align="center">We are planning to <i>rewrite</i> large chunks of the codebase, to bring about <a href="https://github.com/TeamNewPipe/NewPipe/discussions/10118">a new, modern and stable NewPipe</a>!</h3>
-<h4 align="center">Please do <b>not</b> open pull requests for <i>new features</i> now, only bugfix PRs will be accepted.</h4>
+<h3 align="center">We are <i>rewriting</i> large chunks of the codebase, to bring about <a href="https://newpipe.net/blog/pinned/announcement/newpipe-0.27.6-rewrite-team-states/#the-refactor">a modern and stable NewPipe</a>! You can download nightly builds <a href="https://github.com/TeamNewPipe/NewPipe-refactor-nightly/releases">here</a>.</h3>
+<h4 align="center">Please work on the <code>refactor</code> branch if you want to contribute <i>new features</i>. The current codebase is in maintenance mode and will only receive <i>bugfixes</i>.</h4>
 
 <p align="center"><a href="https://newpipe.net"><img src="assets/new_pipe_icon_5.png" width="150"></a></p> 
 <h2 align="center"><b>NewPipe</b></h2>
 <h4 align="center">A libre lightweight streaming front-end for Android.</h4>
 
-<p align="center"><a href="https://f-droid.org/packages/org.schabi.newpipe/"><img src="https://fdroid.gitlab.io/artwork/badge/get-it-on-en.svg" alt="Get it on F-Droid" height=80/></a></p>
+<p align="center"><a href="https://f-droid.org/packages/org.schabi.newpipe/"><img src="https://fdroid.gitlab.io/artwork/badge/get-it-on-en.svg" alt="Get it on F-Droid" width=206/></a></p>
 
 <p align="center">
-<a href="https://github.com/TeamNewPipe/NewPipe/releases" alt="GitHub release"><img src="https://img.shields.io/github/release/TeamNewPipe/NewPipe.svg" ></a>
+<a href="https://github.com/TeamNewPipe/NewPipe/releases" alt="GitHub NewPipe releases"><img src="https://img.shields.io/github/release/TeamNewPipe/NewPipe.svg" ></a>
+<a href="https://github.com/TeamNewPipe/NewPipe-nightly/releases" alt="GitHub NewPipe nightly releases"><img src="https://img.shields.io/github/release/TeamNewPipe/NewPipe-nightly.svg?labelColor=purple&label=dev%20nightly"></a>
+<a href="https://github.com/TeamNewPipe/NewPipe-refactor-nightly/releases" alt="GitHub NewPipe refactor nightly releases"><img src="https://img.shields.io/github/release/TeamNewPipe/NewPipe-refactor-nightly.svg?labelColor=purple&label=refactor%20nightly"></a>
 <a href="https://www.gnu.org/licenses/gpl-3.0" alt="License: GPLv3"><img src="https://img.shields.io/badge/License-GPL%20v3-blue.svg"></a>
-<a href="https://github.com/TeamNewPipe/NewPipe/actions" alt="Build Status"><img src="https://github.com/TeamNewPipe/NewPipe/workflows/CI/badge.svg?branch=dev&event=push"></a>
+<a href="https://github.com/TeamNewPipe/NewPipe/actions" alt="Build Status"><img src="https://github.com/TeamNewPipe/NewPipe/actions/workflows/ci.yml/badge.svg?branch=dev&event=push"></a>
 <a href="https://hosted.weblate.org/engage/newpipe/" alt="Translation Status"><img src="https://hosted.weblate.org/widgets/newpipe/-/svg-badge.svg"></a>
+</p>
+
+<p align="center">
 <a href="https://web.libera.chat/#newpipe" alt="IRC channel: #newpipe"><img src="https://img.shields.io/badge/IRC%20chat-%23newpipe-brightgreen.svg"></a>
 <a href="https://matrix.to/#/#newpipe:matrix.newpipe-ev.de" alt="Matrix channel: #newpipe"><img src="https://img.shields.io/badge/Matrix%20chat-%23newpipe-blue"></a>
 </p>
+
 <hr>
 <p align="center"><a href="#screenshots">Screenshots</a> &bull; <a href="#supported-services">Supported Services</a> &bull; <a href="#description">Description</a> &bull; <a href="#features">Features</a> &bull; <a href="#installation-and-updates">Installation and updates</a> &bull; <a href="#contribution">Contribution</a> &bull; <a href="#donate">Donate</a> &bull; <a href="#license">License</a></p>
 <p align="center"><a href="https://newpipe.net">Website</a> &bull; <a href="https://newpipe.net/blog/">Blog</a> &bull; <a href="https://newpipe.net/FAQ/">FAQ</a> &bull; <a href="https://newpipe.net/press/">Press</a></p>

app/build.gradle

@@ -12,20 +12,20 @@ plugins {
 }
 
 android {
-    compileSdk 34
+    compileSdk 36
     namespace 'org.schabi.newpipe'
 
     defaultConfig {
         applicationId "org.schabi.newpipe"
         resValue "string", "app_name", "NewPipe"
         minSdk 21
-        targetSdk 33
+        targetSdk 35
         if (System.properties.containsKey('versionCodeOverride')) {
             versionCode System.getProperty('versionCodeOverride') as Integer
         } else {
-            versionCode 1002
+            versionCode 1005
         }
-        versionName "0.27.5"
+        versionName "0.28.0"
         if (System.properties.containsKey('versionNameSuffix')) {
             versionNameSuffix System.getProperty('versionNameSuffix')
         }
@@ -97,6 +97,10 @@ android {
         androidTest.assets.srcDirs += files("$projectDir/schemas".toString())
     }
 
+    androidResources {
+        generateLocaleConfig = true
+    }
+
     buildFeatures {
         viewBinding true
         buildConfig true
@@ -205,10 +209,12 @@ dependencies {
     // Or you can use a commit you pushed to GitHub by just replacing TeamNewPipe with your GitHub
     // name and the commit hash with the commit hash of the (pushed) commit you want to test
     // This works thanks to JitPack: https://jitpack.io/
-    implementation 'com.github.TeamNewPipe:nanojson:1d9e1aea9049fc9f85e68b43ba39fe7be1c1f751'
+    implementation 'com.github.TeamNewPipe:nanojson:e9d656ddb49a412a5a0a5d5ef20ca7ef09549996'
     // WORKAROUND: if you get errors with the NewPipeExtractor dependency, replace `v0.24.3` with
-    // the corresponding commit hash, since JitPack is sometimes buggy
-    implementation 'com.github.TeamNewPipe:NewPipeExtractor:v0.24.4'
+    // the corresponding commit hash, since JitPack sometimes deletes artifacts.
+    // If there’s already a git hash, just add more of it to the end (or remove a letter)
+    // to cause jitpack to regenerate the artifact.
+    implementation 'com.github.TeamNewPipe:NewPipeExtractor:0023b22095a2d62a60cdfc87f4b5cd85c8b266c3'
     implementation 'com.github.TeamNewPipe:NoNonsense-FilePicker:5.0.0'
 
 /** Checkstyle **/
@@ -219,7 +225,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib:${kotlin_version}"
 
 /** AndroidX **/
-    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.7.1'
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'androidx.core:core-ktx:1.12.0'
@@ -241,6 +247,7 @@ dependencies {
     implementation "androidx.work:work-runtime-ktx:${androidxWorkVersion}"
     implementation "androidx.work:work-rxjava3:${androidxWorkVersion}"
     implementation 'com.google.android.material:material:1.11.0'
+    implementation "androidx.webkit:webkit:1.9.0"
 
 /** Third-party libraries **/
     // Instance state boilerplate elimination
@@ -273,7 +280,7 @@ dependencies {
     implementation "com.github.lisawray.groupie:groupie-viewbinding:${groupieVersion}"
 
     // Image loading
-    //noinspection GradleDependency --> 2.8 is the last version, not 2.71828!
+    //noinspection NewerVersionAvailable,GradleDependency --> 2.8 is the last version, not 2.71828!
     implementation "com.squareup.picasso:picasso:2.8"
 
     // Markdown library for Android

app/proguard-rules.pro

@@ -5,10 +5,17 @@
 
 ## Rules for NewPipeExtractor
 -keep class org.schabi.newpipe.extractor.timeago.patterns.** { *; }
+## Rules for Rhino and Rhino Engine
+-keep class org.mozilla.javascript.* { *; }
 -keep class org.mozilla.javascript.** { *; }
+-keep class org.mozilla.javascript.engine.** { *; }
 -keep class org.mozilla.classfile.ClassFileWriter
 -dontwarn org.mozilla.javascript.JavaToJSONConverters
 -dontwarn org.mozilla.javascript.tools.**
+-keep class javax.script.** { *; }
+-dontwarn javax.script.**
+-keep class jdk.dynalink.** { *; }
+-dontwarn jdk.dynalink.**
 
 ## Rules for ExoPlayer
 -keep class com.google.android.exoplayer2.** { *; }

app/src/androidTest/java/org/schabi/newpipe/error/ErrorInfoTest.java

@@ -12,6 +12,7 @@ import org.schabi.newpipe.extractor.ServiceList;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 
 import java.util.Arrays;
+import java.util.Objects;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -23,8 +24,23 @@ import static org.junit.Assert.assertTrue;
 @LargeTest
 public class ErrorInfoTest {
 
+    /**
+     * @param errorInfo the error info to access
+     * @return the private field errorInfo.message.stringRes using reflection
+     */
+    private int getMessageFromErrorInfo(final ErrorInfo errorInfo)
+            throws NoSuchFieldException, IllegalAccessException {
+        final var message = ErrorInfo.class.getDeclaredField("message");
+        message.setAccessible(true);
+        final var messageValue = (ErrorInfo.Companion.ErrorMessage) message.get(errorInfo);
+
+        final var stringRes = ErrorInfo.Companion.ErrorMessage.class.getDeclaredField("stringRes");
+        stringRes.setAccessible(true);
+        return (int) Objects.requireNonNull(stringRes.get(messageValue));
+    }
+
     @Test
-    public void errorInfoTestParcelable() {
+    public void errorInfoTestParcelable() throws NoSuchFieldException, IllegalAccessException {
         final ErrorInfo info = new ErrorInfo(new ParsingException("Hello"),
                 UserAction.USER_REPORT, "request", ServiceList.YouTube.getServiceId());
         // Obtain a Parcel object and write the parcelable object to it:
@@ -39,7 +55,7 @@ public class ErrorInfoTest {
         assertEquals(ServiceList.YouTube.getServiceInfo().getName(),
                 infoFromParcel.getServiceName());
         assertEquals("request", infoFromParcel.getRequest());
-        assertEquals(R.string.parsing_error, infoFromParcel.getMessageStringId());
+        assertEquals(R.string.parsing_error, getMessageFromErrorInfo(infoFromParcel));
 
         parcel.recycle();
     }

app/src/main/AndroidManifest.xml

@@ -9,6 +9,8 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
 
     <!-- We need to be able to open links in the browser on API 30+ -->
@@ -57,6 +59,15 @@
             </intent-filter>
         </receiver>
 
+        <service
+            android:name="androidx.appcompat.app.AppLocalesMetadataHolderService"
+            android:enabled="false"
+            android:exported="false">
+            <meta-data
+                android:name="autoStoreLocales"
+                android:value="true" />
+        </service>
+
         <service
             android:name=".player.PlayerService"
             android:exported="true"
@@ -64,6 +75,9 @@
             <intent-filter>
                 <action android:name="android.intent.action.MEDIA_BUTTON" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.media.browse.MediaBrowserService"/>
+            </intent-filter>
         </service>
 
         <activity
@@ -82,9 +96,22 @@
             android:exported="false"
             android:label="@string/title_activity_about" />
 
-        <service android:name=".local.subscription.services.SubscriptionsImportService" />
-        <service android:name=".local.subscription.services.SubscriptionsExportService" />
-        <service android:name=".local.feed.service.FeedLoadService" />
+        <service
+            android:name=".local.subscription.services.SubscriptionsImportService"
+            android:foregroundServiceType="dataSync" />
+
+        <service
+            android:name=".local.subscription.services.SubscriptionsExportService"
+            android:foregroundServiceType="dataSync" />
+
+        <service
+            android:name=".local.feed.service.FeedLoadService"
+            android:foregroundServiceType="dataSync" />
+
+        <service
+            android:name="androidx.work.impl.foreground.SystemForegroundService"
+            android:foregroundServiceType="dataSync"
+            tools:node="merge" />
 
         <activity
             android:name=".PanicResponderActivity"
@@ -116,7 +143,8 @@
             android:label="@string/app_name"
             android:launchMode="singleTask" />
 
-        <service android:name="us.shandian.giga.service.DownloadManagerService" />
+        <service android:name="us.shandian.giga.service.DownloadManagerService"
+            android:foregroundServiceType="dataSync" />
 
         <activity
             android:name=".util.FilePickerActivityHelper"
@@ -409,6 +437,7 @@
         </activity>
         <service
             android:name=".RouterActivity$FetcherService"
+            android:foregroundServiceType="dataSync"
             android:exported="false" />
 
         <!-- opting out of sending metrics to Google in Android System WebView -->
@@ -424,5 +453,10 @@
         <meta-data
             android:name="com.samsung.android.multidisplay.keep_process_alive"
             android:value="true" />
+        <!-- Android Auto -->
+        <meta-data android:name="com.google.android.gms.car.application"
+            android:resource="@xml/automotive_app_desc" />
+        <meta-data android:name="com.google.android.gms.car.notification.SmallIcon"
+            android:resource="@mipmap/ic_launcher" />
     </application>
 </manifest>

app/src/main/assets/po_token.html

@@ -0,0 +1,127 @@
+<!DOCTYPE html>
+<html lang="en"><head><title></title><script>
+/**
+ * Factory method to create and load a BotGuardClient instance.
+ * @param options - Configuration options for the BotGuardClient.
+ * @returns A promise that resolves to a loaded BotGuardClient instance.
+ */
+function loadBotGuard(challengeData) {
+  this.vm = this[challengeData.globalName];
+  this.program = challengeData.program;
+  this.vmFunctions = {};
+  this.syncSnapshotFunction = null;
+
+  if (!this.vm)
+    throw new Error('[BotGuardClient]: VM not found in the global object');
+
+  if (!this.vm.a)
+    throw new Error('[BotGuardClient]: Could not load program');
+
+  const vmFunctionsCallback = function (
+    asyncSnapshotFunction,
+    shutdownFunction,
+    passEventFunction,
+    checkCameraFunction
+  ) {
+    this.vmFunctions = {
+      asyncSnapshotFunction: asyncSnapshotFunction,
+      shutdownFunction: shutdownFunction,
+      passEventFunction: passEventFunction,
+      checkCameraFunction: checkCameraFunction
+    };
+  };
+
+  this.syncSnapshotFunction = this.vm.a(this.program, vmFunctionsCallback, true, this.userInteractionElement, function () {/** no-op */ }, [ [], [] ])[0]
+
+  // an asynchronous function runs in the background and it will eventually call
+  // `vmFunctionsCallback`, however we need to manually tell JavaScript to pass
+  // control to the things running in the background by interrupting this async
+  // function in any way, e.g. with a delay of 1ms. The loop is most probably not
+  // needed but is there just because.
+  return new Promise(function (resolve, reject) {
+    i = 0
+    refreshIntervalId = setInterval(function () {
+      if (!!this.vmFunctions.asyncSnapshotFunction) {
+        resolve(this)
+        clearInterval(refreshIntervalId);
+      }
+      if (i >= 10000) {
+        reject("asyncSnapshotFunction is null even after 10 seconds")
+        clearInterval(refreshIntervalId);
+      }
+      i += 1;
+    }, 1);
+  })
+}
+
+/**
+ * Takes a snapshot asynchronously.
+ * @returns The snapshot result.
+ * @example
+ * ```ts
+ * const result = await botguard.snapshot({
+ *   contentBinding: {
+ *     c: "a=6&a2=10&b=SZWDwKVIuixOp7Y4euGTgwckbJA&c=1729143849&d=1&t=7200&c1a=1&c6a=1&c6b=1&hh=HrMb5mRWTyxGJphDr0nW2Oxonh0_wl2BDqWuLHyeKLo",
+ *     e: "ENGAGEMENT_TYPE_VIDEO_LIKE",
+ *     encryptedVideoId: "P-vC09ZJcnM"
+ *    }
+ * });
+ *
+ * console.log(result);
+ * ```
+ */
+function snapshot(args) {
+  return new Promise(function (resolve, reject) {
+    if (!this.vmFunctions.asyncSnapshotFunction)
+      return reject(new Error('[BotGuardClient]: Async snapshot function not found'));
+
+    this.vmFunctions.asyncSnapshotFunction(function (response) { resolve(response) }, [
+      args.contentBinding,
+      args.signedTimestamp,
+      args.webPoSignalOutput,
+      args.skipPrivacyBuffer
+    ]);
+  });
+}
+
+function runBotGuard(challengeData) {
+  const interpreterJavascript = challengeData.interpreterJavascript.privateDoNotAccessOrElseSafeScriptWrappedValue;
+
+  if (interpreterJavascript) {
+    new Function(interpreterJavascript)();
+  } else throw new Error('Could not load VM');
+
+  const webPoSignalOutput = [];
+  return loadBotGuard({
+    globalName: challengeData.globalName,
+    globalObj: this,
+    program: challengeData.program
+  }).then(function (botguard) {
+    return botguard.snapshot({ webPoSignalOutput: webPoSignalOutput })
+  }).then(function (botguardResponse) {
+    return { webPoSignalOutput: webPoSignalOutput, botguardResponse: botguardResponse }
+  })
+}
+
+function obtainPoToken(webPoSignalOutput, integrityToken, identifier) {
+  const getMinter = webPoSignalOutput[0];
+
+  if (!getMinter)
+    throw new Error('PMD:Undefined');
+
+  const mintCallback = getMinter(integrityToken);
+
+  if (!(mintCallback instanceof Function))
+    throw new Error('APF:Failed');
+
+  const result = mintCallback(identifier);
+
+  if (!result)
+    throw new Error('YNJ:Undefined');
+
+  if (!(result instanceof Uint8Array))
+    throw new Error('ODM:Invalid');
+
+  return result;
+}
+</script></head><body></body></html>

app/src/main/java/org/schabi/newpipe/App.java

@@ -17,6 +17,7 @@ import org.acra.config.CoreConfigurationBuilder;
 import org.schabi.newpipe.error.ReCaptchaActivity;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.downloader.Downloader;
+import org.schabi.newpipe.extractor.services.youtube.extractors.YoutubeStreamExtractor;
 import org.schabi.newpipe.ktx.ExceptionUtils;
 import org.schabi.newpipe.settings.NewPipeSettings;
 import org.schabi.newpipe.util.BridgeStateSaverInitializer;
@@ -26,6 +27,7 @@ import org.schabi.newpipe.util.StateSaver;
 import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.image.PreferredImageQuality;
+import org.schabi.newpipe.util.potoken.PoTokenProviderImpl;
 
 import java.io.IOException;
 import java.io.InterruptedIOException;
@@ -100,7 +102,7 @@ public class App extends Application {
         NewPipe.init(getDownloader(),
             Localization.getPreferredLocalization(this),
             Localization.getPreferredContentCountry(this));
-        Localization.initPrettyTime(Localization.resolvePrettyTime(getApplicationContext()));
+        Localization.initPrettyTime(Localization.resolvePrettyTime());
 
         BridgeStateSaverInitializer.init(this);
         StateSaver.init(this);
@@ -118,6 +120,8 @@ public class App extends Application {
                 && prefs.getBoolean(getString(R.string.show_image_indicators_key), false));
 
         configureRxJavaErrorHandler();
+
+        YoutubeStreamExtractor.setPoTokenProvider(PoTokenProviderImpl.INSTANCE);
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/DownloaderImpl.java

@@ -29,7 +29,7 @@ import okhttp3.ResponseBody;
 
 public final class DownloaderImpl extends Downloader {
     public static final String USER_AGENT =
-            "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0";
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0";
     public static final String YOUTUBE_RESTRICTED_MODE_COOKIE_KEY =
             "youtube_restricted_mode_key";
     public static final String YOUTUBE_RESTRICTED_MODE_COOKIE = "PREF=f2=8000000";
@@ -137,7 +137,8 @@ public final class DownloaderImpl extends Downloader {
         }
 
         final okhttp3.Request.Builder requestBuilder = new okhttp3.Request.Builder()
-                .method(httpMethod, requestBody).url(url)
+                .method(httpMethod, requestBody)
+                .url(url)
                 .addHeader("User-Agent", USER_AGENT);
 
         final String cookies = getCookies(url);
@@ -145,38 +146,33 @@ public final class DownloaderImpl extends Downloader {
             requestBuilder.addHeader("Cookie", cookies);
         }
 
-        for (final Map.Entry<String, List<String>> pair : headers.entrySet()) {
-            final String headerName = pair.getKey();
-            final List<String> headerValueList = pair.getValue();
+        headers.forEach((headerName, headerValueList) -> {
+            requestBuilder.removeHeader(headerName);
+            headerValueList.forEach(headerValue ->
+                    requestBuilder.addHeader(headerName, headerValue));
+        });
 
-            if (headerValueList.size() > 1) {
-                requestBuilder.removeHeader(headerName);
-                for (final String headerValue : headerValueList) {
-                    requestBuilder.addHeader(headerName, headerValue);
-                }
-            } else if (headerValueList.size() == 1) {
-                requestBuilder.header(headerName, headerValueList.get(0));
+        try (
+                okhttp3.Response response = client.newCall(requestBuilder.build()).execute()
+        ) {
+            if (response.code() == 429) {
+                throw new ReCaptchaException("reCaptcha Challenge requested", url);
             }
 
+            String responseBodyToReturn = null;
+            try (ResponseBody body = response.body()) {
+                if (body != null) {
+                    responseBodyToReturn = body.string();
+                }
+            }
+
+            final String latestUrl = response.request().url().toString();
+            return new Response(
+                    response.code(),
+                    response.message(),
+                    response.headers().toMultimap(),
+                    responseBodyToReturn,
+                    latestUrl);
         }
-
-        final okhttp3.Response response = client.newCall(requestBuilder.build()).execute();
-
-        if (response.code() == 429) {
-            response.close();
-
-            throw new ReCaptchaException("reCaptcha Challenge requested", url);
-        }
-
-        final ResponseBody body = response.body();
-        String responseBodyToReturn = null;
-
-        if (body != null) {
-            responseBodyToReturn = body.string();
-        }
-
-        final String latestUrl = response.request().url().toString();
-        return new Response(response.code(), response.message(), response.headers().toMultimap(),
-                responseBodyToReturn, latestUrl);
     }
 }

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -20,8 +20,6 @@
 
 package org.schabi.newpipe;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -38,6 +36,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.webkit.WebView;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.FrameLayout;
@@ -49,6 +48,7 @@ import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.ActionBarDrawerToggle;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import androidx.core.view.GravityCompat;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.Fragment;
@@ -80,6 +80,7 @@ import org.schabi.newpipe.player.event.OnKeyDownListener;
 import org.schabi.newpipe.player.helper.PlayerHolder;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
 import org.schabi.newpipe.settings.UpdateSettingsFragment;
+import org.schabi.newpipe.settings.migration.MigrationManager;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.KioskTranslator;
@@ -92,6 +93,7 @@ import org.schabi.newpipe.util.SerializedCache;
 import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.StateSaver;
 import org.schabi.newpipe.util.ThemeHelper;
+import org.schabi.newpipe.util.external_communication.ShareUtils;
 import org.schabi.newpipe.views.FocusOverlayView;
 
 import java.util.ArrayList;
@@ -120,10 +122,14 @@ public class MainActivity extends AppCompatActivity {
     private static final int ITEM_ID_DOWNLOADS = -4;
     private static final int ITEM_ID_HISTORY = -5;
     private static final int ITEM_ID_SETTINGS = 0;
-    private static final int ITEM_ID_ABOUT = 1;
+    private static final int ITEM_ID_DONATION = 1;
+    private static final int ITEM_ID_ABOUT = 2;
 
     private static final int ORDER = 0;
+    public static final String KEY_IS_IN_BACKGROUND = "is_in_background";
 
+    private SharedPreferences sharedPreferences;
+    private SharedPreferences.Editor sharedPrefEditor;
     /*//////////////////////////////////////////////////////////////////////////
     // Activity's LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
@@ -135,11 +141,26 @@ public class MainActivity extends AppCompatActivity {
                     + "savedInstanceState = [" + savedInstanceState + "]");
         }
 
+        Localization.migrateAppLanguageSettingIfNecessary(getApplicationContext());
         ThemeHelper.setDayNightMode(this);
         ThemeHelper.setTheme(this, ServiceHelper.getSelectedServiceId(this));
 
-        assureCorrectAppLanguage(this);
+        // Fixes text color turning black in dark/black mode:
+        // https://github.com/TeamNewPipe/NewPipe/issues/12016
+        // For further reference see: https://issuetracker.google.com/issues/37124582
+        if (DeviceUtils.supportsWebView()) {
+            try {
+                new WebView(this);
+            } catch (final Throwable e) {
+                if (DEBUG) {
+                    Log.e(TAG, "Failed to create WebView", e);
+                }
+            }
+        }
+
         super.onCreate(savedInstanceState);
+        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        sharedPrefEditor = sharedPreferences.edit();
 
         mainBinding = ActivityMainBinding.inflate(getLayoutInflater());
         drawerLayoutBinding = mainBinding.drawerLayout;
@@ -174,6 +195,8 @@ public class MainActivity extends AppCompatActivity {
                 && ReleaseVersionUtil.INSTANCE.isReleaseApk()) {
             UpdateSettingsFragment.askForConsentToUpdateChecks(this);
         }
+
+        MigrationManager.showUserInfoIfPresent(this);
     }
 
     @Override
@@ -181,16 +204,29 @@ public class MainActivity extends AppCompatActivity {
         super.onPostCreate(savedInstanceState);
 
         final App app = App.getApp();
-        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(app);
 
-        if (prefs.getBoolean(app.getString(R.string.update_app_key), false)
-                && prefs.getBoolean(app.getString(R.string.update_check_consent_key), false)) {
+        if (sharedPreferences.getBoolean(app.getString(R.string.update_app_key), false)
+                && sharedPreferences
+                .getBoolean(app.getString(R.string.update_check_consent_key), false)) {
             // Start the worker which is checking all conditions
             // and eventually searching for a new version.
             NewVersionWorker.enqueueNewVersionCheckingWork(app, false);
         }
     }
 
+    @Override
+    protected void onStart() {
+        super.onStart();
+        sharedPrefEditor.putBoolean(KEY_IS_IN_BACKGROUND, false).apply();
+        Log.d(TAG, "App moved to foreground");
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        sharedPrefEditor.putBoolean(KEY_IS_IN_BACKGROUND, true).apply();
+        Log.d(TAG, "App moved to background");
+    }
     private void setupDrawer() throws ExtractionException {
         addDrawerMenuForCurrentService();
 
@@ -228,19 +264,6 @@ public class MainActivity extends AppCompatActivity {
      */
     private void addDrawerMenuForCurrentService() throws ExtractionException {
         //Tabs
-        final int currentServiceId = ServiceHelper.getSelectedServiceId(this);
-        final StreamingService service = NewPipe.getService(currentServiceId);
-
-        int kioskMenuItemId = 0;
-
-        for (final String ks : service.getKioskList().getAvailableKiosks()) {
-            drawerLayoutBinding.navigation.getMenu()
-                    .add(R.id.menu_tabs_group, kioskMenuItemId, 0, KioskTranslator
-                            .getTranslatedKioskName(ks, this))
-                    .setIcon(KioskTranslator.getKioskIcon(ks));
-            kioskMenuItemId++;
-        }
-
         drawerLayoutBinding.navigation.getMenu()
                 .add(R.id.menu_tabs_group, ITEM_ID_SUBSCRIPTIONS, ORDER,
                         R.string.tab_subscriptions)
@@ -258,10 +281,28 @@ public class MainActivity extends AppCompatActivity {
                 .add(R.id.menu_tabs_group, ITEM_ID_HISTORY, ORDER, R.string.action_history)
                 .setIcon(R.drawable.ic_history);
 
+        //Kiosks
+        final int currentServiceId = ServiceHelper.getSelectedServiceId(this);
+        final StreamingService service = NewPipe.getService(currentServiceId);
+
+        int kioskMenuItemId = 0;
+
+        for (final String ks : service.getKioskList().getAvailableKiosks()) {
+            drawerLayoutBinding.navigation.getMenu()
+                    .add(R.id.menu_kiosks_group, kioskMenuItemId, 0, KioskTranslator
+                            .getTranslatedKioskName(ks, this))
+                    .setIcon(KioskTranslator.getKioskIcon(ks));
+            kioskMenuItemId++;
+        }
+
         //Settings and About
         drawerLayoutBinding.navigation.getMenu()
                 .add(R.id.menu_options_about_group, ITEM_ID_SETTINGS, ORDER, R.string.settings)
                 .setIcon(R.drawable.ic_settings);
+        drawerLayoutBinding.navigation.getMenu()
+                .add(R.id.menu_options_about_group, ITEM_ID_DONATION, ORDER,
+                        R.string.donation_title)
+                .setIcon(R.drawable.volunteer_activism_ic);
         drawerLayoutBinding.navigation.getMenu()
                 .add(R.id.menu_options_about_group, ITEM_ID_ABOUT, ORDER, R.string.tab_about)
                 .setIcon(R.drawable.ic_info_outline);
@@ -273,10 +314,13 @@ public class MainActivity extends AppCompatActivity {
                 changeService(item);
                 break;
             case R.id.menu_tabs_group:
+                tabSelected(item);
+                break;
+            case R.id.menu_kiosks_group:
                 try {
-                    tabSelected(item);
+                    kioskSelected(item);
                 } catch (final Exception e) {
-                    ErrorUtil.showUiErrorSnackbar(this, "Selecting main page tab", e);
+                    ErrorUtil.showUiErrorSnackbar(this, "Selecting drawer kiosk", e);
                 }
                 break;
             case R.id.menu_options_about_group:
@@ -300,7 +344,7 @@ public class MainActivity extends AppCompatActivity {
                 .setChecked(true);
     }
 
-    private void tabSelected(final MenuItem item) throws ExtractionException {
+    private void tabSelected(final MenuItem item) {
         switch (item.getItemId()) {
             case ITEM_ID_SUBSCRIPTIONS:
                 NavigationHelper.openSubscriptionFragment(getSupportFragmentManager());
@@ -317,18 +361,19 @@ public class MainActivity extends AppCompatActivity {
             case ITEM_ID_HISTORY:
                 NavigationHelper.openStatisticFragment(getSupportFragmentManager());
                 break;
-            default:
-                final StreamingService currentService = ServiceHelper.getSelectedService(this);
-                int kioskMenuItemId = 0;
-                for (final String kioskId : currentService.getKioskList().getAvailableKiosks()) {
-                    if (kioskMenuItemId == item.getItemId()) {
-                        NavigationHelper.openKioskFragment(getSupportFragmentManager(),
-                                currentService.getServiceId(), kioskId);
-                        break;
-                    }
-                    kioskMenuItemId++;
-                }
+        }
+    }
+
+    private void kioskSelected(final MenuItem item) throws ExtractionException {
+        final StreamingService currentService = ServiceHelper.getSelectedService(this);
+        int kioskMenuItemId = 0;
+        for (final String kioskId : currentService.getKioskList().getAvailableKiosks()) {
+            if (kioskMenuItemId == item.getItemId()) {
+                NavigationHelper.openKioskFragment(getSupportFragmentManager(),
+                        currentService.getServiceId(), kioskId);
                 break;
+            }
+            kioskMenuItemId++;
         }
     }
 
@@ -337,6 +382,9 @@ public class MainActivity extends AppCompatActivity {
             case ITEM_ID_SETTINGS:
                 NavigationHelper.openSettings(this);
                 break;
+            case ITEM_ID_DONATION:
+                ShareUtils.openUrlInBrowser(this, getString(R.string.donation_url));
+                break;
             case ITEM_ID_ABOUT:
                 NavigationHelper.openAbout(this);
                 break;
@@ -366,6 +414,7 @@ public class MainActivity extends AppCompatActivity {
 
         drawerLayoutBinding.navigation.getMenu().removeGroup(R.id.menu_services_group);
         drawerLayoutBinding.navigation.getMenu().removeGroup(R.id.menu_tabs_group);
+        drawerLayoutBinding.navigation.getMenu().removeGroup(R.id.menu_kiosks_group);
         drawerLayoutBinding.navigation.getMenu().removeGroup(R.id.menu_options_about_group);
 
         // Show up or down arrow
@@ -459,9 +508,8 @@ public class MainActivity extends AppCompatActivity {
 
     @Override
     protected void onResume() {
-        assureCorrectAppLanguage(this);
         // Change the date format to match the selected language on resume
-        Localization.initPrettyTime(Localization.resolvePrettyTime(getApplicationContext()));
+        Localization.initPrettyTime(Localization.resolvePrettyTime());
         super.onResume();
 
         // Close drawer on return, and don't show animation,
@@ -483,13 +531,11 @@ public class MainActivity extends AppCompatActivity {
             ErrorUtil.showUiErrorSnackbar(this, "Setting up service toggle", e);
         }
 
-        final SharedPreferences sharedPreferences =
-                PreferenceManager.getDefaultSharedPreferences(this);
         if (sharedPreferences.getBoolean(Constants.KEY_THEME_CHANGE, false)) {
             if (DEBUG) {
                 Log.d(TAG, "Theme has changed, recreating activity...");
             }
-            sharedPreferences.edit().putBoolean(Constants.KEY_THEME_CHANGE, false).apply();
+            sharedPrefEditor.putBoolean(Constants.KEY_THEME_CHANGE, false).apply();
             ActivityCompat.recreate(this);
         }
 
@@ -497,7 +543,7 @@ public class MainActivity extends AppCompatActivity {
             if (DEBUG) {
                 Log.d(TAG, "main page has changed, recreating main fragment...");
             }
-            sharedPreferences.edit().putBoolean(Constants.KEY_MAIN_PAGE_CHANGE, false).apply();
+            sharedPrefEditor.putBoolean(Constants.KEY_MAIN_PAGE_CHANGE, false).apply();
             NavigationHelper.openMainActivity(this);
         }
 
@@ -839,7 +885,8 @@ public class MainActivity extends AppCompatActivity {
                 @Override
                 public void onReceive(final Context context, final Intent intent) {
                     if (Objects.equals(intent.getAction(),
-                            VideoDetailFragment.ACTION_PLAYER_STARTED)) {
+                            VideoDetailFragment.ACTION_PLAYER_STARTED)
+                            && PlayerHolder.getInstance().isPlayerOpen()) {
                         openMiniPlayerIfMissing();
                         // At this point the player is added 100%, we can unregister. Other actions
                         // are useless since the fragment will not be removed after that.
@@ -850,7 +897,12 @@ public class MainActivity extends AppCompatActivity {
             };
             final IntentFilter intentFilter = new IntentFilter();
             intentFilter.addAction(VideoDetailFragment.ACTION_PLAYER_STARTED);
-            registerReceiver(broadcastReceiver, intentFilter);
+            ContextCompat.registerReceiver(this, broadcastReceiver, intentFilter,
+                    ContextCompat.RECEIVER_EXPORTED);
+
+            // If the PlayerHolder is not bound yet, but the service is running, try to bind to it.
+            // Once the connection is established, the ACTION_PLAYER_STARTED will be sent.
+            PlayerHolder.getInstance().tryBindIfNeeded(this);
         }
     }
 
@@ -924,4 +976,5 @@ public class MainActivity extends AppCompatActivity {
         return sheetState == BottomSheetBehavior.STATE_HIDDEN
                 || sheetState == BottomSheetBehavior.STATE_COLLAPSED;
     }
+
 }

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -58,20 +58,10 @@ import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.StreamingService.LinkType;
 import org.schabi.newpipe.extractor.channel.ChannelInfo;
-import org.schabi.newpipe.extractor.exceptions.AgeRestrictedContentException;
-import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
-import org.schabi.newpipe.extractor.exceptions.ContentNotSupportedException;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
-import org.schabi.newpipe.extractor.exceptions.GeographicRestrictionException;
-import org.schabi.newpipe.extractor.exceptions.PaidContentException;
-import org.schabi.newpipe.extractor.exceptions.PrivateContentException;
-import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
-import org.schabi.newpipe.extractor.exceptions.SoundCloudGoPlusContentException;
-import org.schabi.newpipe.extractor.exceptions.YoutubeMusicPremiumContentException;
 import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
-import org.schabi.newpipe.ktx.ExceptionUtils;
 import org.schabi.newpipe.local.dialog.PlaylistDialog;
 import org.schabi.newpipe.player.PlayerType;
 import org.schabi.newpipe.player.helper.PlayerHelper;
@@ -84,7 +74,6 @@ import org.schabi.newpipe.util.ChannelTabHelper;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.ExtractorHelper;
-import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.ThemeHelper;
@@ -132,7 +121,6 @@ public class RouterActivity extends AppCompatActivity {
         ThemeHelper.setDayNightMode(this);
         setTheme(ThemeHelper.isLightThemeSelected(this)
                 ? R.style.RouterActivityThemeLight : R.style.RouterActivityThemeDark);
-        Localization.assureCorrectAppLanguage(this);
 
         // Pass-through touch events to background activities
         // so that our transparent window won't lock UI in the mean time
@@ -262,7 +250,8 @@ public class RouterActivity extends AppCompatActivity {
                         showUnsupportedUrlDialog(url);
                     }
                 }, throwable -> handleError(this, new ErrorInfo(throwable,
-                        UserAction.SHARE_TO_NEWPIPE, "Getting service from url: " + url))));
+                        UserAction.SHARE_TO_NEWPIPE, "Getting service from url: " + url,
+                        null, url))));
     }
 
     /**
@@ -271,40 +260,19 @@ public class RouterActivity extends AppCompatActivity {
      * @param errorInfo the error information
      */
     private static void handleError(final Context context, final ErrorInfo errorInfo) {
-        if (errorInfo.getThrowable() != null) {
-            errorInfo.getThrowable().printStackTrace();
-        }
-
-        if (errorInfo.getThrowable() instanceof ReCaptchaException) {
+        if (errorInfo.getRecaptchaUrl() != null) {
             Toast.makeText(context, R.string.recaptcha_request_toast, Toast.LENGTH_LONG).show();
             // Starting ReCaptcha Challenge Activity
             final Intent intent = new Intent(context, ReCaptchaActivity.class);
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            intent.putExtra(ReCaptchaActivity.RECAPTCHA_URL_EXTRA, errorInfo.getRecaptchaUrl());
             context.startActivity(intent);
-        } else if (errorInfo.getThrowable() != null
-                && ExceptionUtils.isNetworkRelated(errorInfo.getThrowable())) {
-            Toast.makeText(context, R.string.network_error, Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof AgeRestrictedContentException) {
-            Toast.makeText(context, R.string.restricted_video_no_stream,
-                    Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof GeographicRestrictionException) {
-            Toast.makeText(context, R.string.georestricted_content, Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof PaidContentException) {
-            Toast.makeText(context, R.string.paid_content, Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof PrivateContentException) {
-            Toast.makeText(context, R.string.private_content, Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof SoundCloudGoPlusContentException) {
-            Toast.makeText(context, R.string.soundcloud_go_plus_content,
-                    Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof YoutubeMusicPremiumContentException) {
-            Toast.makeText(context, R.string.youtube_music_premium_content,
-                    Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof ContentNotAvailableException) {
-            Toast.makeText(context, R.string.content_not_available, Toast.LENGTH_LONG).show();
-        } else if (errorInfo.getThrowable() instanceof ContentNotSupportedException) {
-            Toast.makeText(context, R.string.content_not_supported, Toast.LENGTH_LONG).show();
-        } else {
+        } else if (errorInfo.isReportable()) {
             ErrorUtil.createNotification(context, errorInfo);
+        } else {
+            // this exception does not usually indicate a problem that should be reported,
+            // so just show a toast instead of the notification
+            Toast.makeText(context, errorInfo.getMessage(context), Toast.LENGTH_LONG).show();
         }
 
         if (context instanceof RouterActivity) {
@@ -667,7 +635,8 @@ public class RouterActivity extends AppCompatActivity {
                         startActivity(intent);
                         finish();
                     }, throwable -> handleError(this, new ErrorInfo(throwable,
-                            UserAction.SHARE_TO_NEWPIPE, "Starting info activity: " + currentUrl)))
+                            UserAction.SHARE_TO_NEWPIPE, "Starting info activity: " + currentUrl,
+                            null, currentUrl)))
             );
             return;
         }
@@ -854,10 +823,10 @@ public class RouterActivity extends AppCompatActivity {
                                             })
                                     )),
                             throwable -> runOnVisible(ctx -> handleError(ctx, new ErrorInfo(
-                                    throwable,
-                                    UserAction.REQUESTED_STREAM,
+                                    throwable, UserAction.REQUESTED_STREAM,
                                     "Tried to add " + currentUrl + " to a playlist",
-                                    ((RouterActivity) ctx).currentService.getServiceId())
+                                    ((RouterActivity) ctx).currentService.getServiceId(),
+                                    currentUrl)
                             ))
                     )
             );
@@ -997,7 +966,7 @@ public class RouterActivity extends AppCompatActivity {
                             }
                         }, throwable -> handleError(this, new ErrorInfo(throwable, finalUserAction,
                                 choice.url + " opened with " + choice.playerChoice,
-                                choice.serviceId)));
+                                choice.serviceId, choice.url)));
             }
         }
 

app/src/main/java/org/schabi/newpipe/about/AboutActivity.kt

@@ -16,14 +16,12 @@ import org.schabi.newpipe.BuildConfig
 import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.ActivityAboutBinding
 import org.schabi.newpipe.databinding.FragmentAboutBinding
-import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.ThemeHelper
 import org.schabi.newpipe.util.external_communication.ShareUtils
 
 class AboutActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
-        Localization.assureCorrectAppLanguage(this)
         super.onCreate(savedInstanceState)
         ThemeHelper.setTheme(this)
         title = getString(R.string.title_activity_about)

app/src/main/java/org/schabi/newpipe/about/LicenseFragment.kt

@@ -19,7 +19,6 @@ import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.FragmentLicensesBinding
 import org.schabi.newpipe.databinding.ItemSoftwareComponentBinding
 import org.schabi.newpipe.ktx.parcelableArrayList
-import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.external_communication.ShareUtils
 
 /**
@@ -100,7 +99,6 @@ class LicenseFragment : Fragment() {
                     val webView = WebView(context)
                     webView.loadData(webViewData, "text/html; charset=UTF-8", "base64")
 
-                    Localization.assureCorrectAppLanguage(context)
                     val builder = AlertDialog.Builder(requireContext())
                         .setTitle(softwareComponent.name)
                         .setView(webView)

app/src/main/java/org/schabi/newpipe/database/history/model/StreamHistoryEntry.kt

@@ -3,6 +3,8 @@ package org.schabi.newpipe.database.history.model
 import androidx.room.ColumnInfo
 import androidx.room.Embedded
 import org.schabi.newpipe.database.stream.model.StreamEntity
+import org.schabi.newpipe.extractor.stream.StreamInfoItem
+import org.schabi.newpipe.util.image.ImageStrategy
 import java.time.OffsetDateTime
 
 data class StreamHistoryEntry(
@@ -27,4 +29,17 @@ data class StreamHistoryEntry(
         return this.streamEntity.uid == other.streamEntity.uid && streamId == other.streamId &&
             accessDate.isEqual(other.accessDate)
     }
+
+    fun toStreamInfoItem(): StreamInfoItem =
+        StreamInfoItem(
+            streamEntity.serviceId,
+            streamEntity.url,
+            streamEntity.title,
+            streamEntity.streamType,
+        ).apply {
+            duration = streamEntity.duration
+            uploaderName = streamEntity.uploader
+            uploaderUrl = streamEntity.uploaderUrl
+            thumbnails = ImageStrategy.dbUrlToImageList(streamEntity.thumbnailUrl)
+        }
 }

app/src/main/java/org/schabi/newpipe/database/playlist/PlaylistLocalItem.java

@@ -1,5 +1,7 @@
 package org.schabi.newpipe.database.playlist;
 
+import androidx.annotation.Nullable;
+
 import org.schabi.newpipe.database.LocalItem;
 
 public interface PlaylistLocalItem extends LocalItem {
@@ -10,4 +12,7 @@ public interface PlaylistLocalItem extends LocalItem {
     long getUid();
 
     void setDisplayIndex(long displayIndex);
+
+    @Nullable
+    String getThumbnailUrl();
 }

app/src/main/java/org/schabi/newpipe/database/playlist/PlaylistMetadataEntry.java

@@ -9,6 +9,8 @@ import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST
 import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_THUMBNAIL_STREAM_ID;
 import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_THUMBNAIL_URL;
 
+import androidx.annotation.Nullable;
+
 public class PlaylistMetadataEntry implements PlaylistLocalItem {
     public static final String PLAYLIST_STREAM_COUNT = "streamCount";
 
@@ -71,4 +73,10 @@ public class PlaylistMetadataEntry implements PlaylistLocalItem {
     public void setDisplayIndex(final long displayIndex) {
         this.displayIndex = displayIndex;
     }
+
+    @Nullable
+    @Override
+    public String getThumbnailUrl() {
+        return thumbnailUrl;
+    }
 }

app/src/main/java/org/schabi/newpipe/database/playlist/dao/PlaylistRemoteDAO.java

@@ -34,7 +34,7 @@ public interface PlaylistRemoteDAO extends BasicDAO<PlaylistRemoteEntity> {
 
     @Query("SELECT * FROM " + REMOTE_PLAYLIST_TABLE + " WHERE "
             + REMOTE_PLAYLIST_ID + " = :playlistId")
-    Flowable<List<PlaylistRemoteEntity>> getPlaylist(long playlistId);
+    Flowable<PlaylistRemoteEntity> getPlaylist(long playlistId);
 
     @Query("SELECT * FROM " + REMOTE_PLAYLIST_TABLE + " WHERE "
             + REMOTE_PLAYLIST_URL + " = :url AND " + REMOTE_PLAYLIST_SERVICE_ID + " = :serviceId")

app/src/main/java/org/schabi/newpipe/database/playlist/model/PlaylistRemoteEntity.java

@@ -2,6 +2,7 @@ package org.schabi.newpipe.database.playlist.model;
 
 import android.text.TextUtils;
 
+import androidx.annotation.Nullable;
 import androidx.room.ColumnInfo;
 import androidx.room.Entity;
 import androidx.room.Ignore;
@@ -134,6 +135,8 @@ public class PlaylistRemoteEntity implements PlaylistLocalItem {
         this.name = name;
     }
 
+    @Nullable
+    @Override
     public String getThumbnailUrl() {
         return thumbnailUrl;
     }

app/src/main/java/org/schabi/newpipe/download/DownloadActivity.java

@@ -20,8 +20,6 @@ import org.schabi.newpipe.views.FocusOverlayView;
 import us.shandian.giga.service.DownloadManagerService;
 import us.shandian.giga.ui.fragment.MissionsFragment;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 public class DownloadActivity extends AppCompatActivity {
 
     private static final String MISSIONS_FRAGMENT_TAG = "fragment_tag";
@@ -33,7 +31,6 @@ public class DownloadActivity extends AppCompatActivity {
         i.setClass(this, DownloadManagerService.class);
         startService(i);
 
-        assureCorrectAppLanguage(this);
         ThemeHelper.setTheme(this);
 
         super.onCreate(savedInstanceState);

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -2,7 +2,6 @@ package org.schabi.newpipe.download;
 
 import static org.schabi.newpipe.extractor.stream.DeliveryMethod.PROGRESSIVE_HTTP;
 import static org.schabi.newpipe.util.ListHelper.getStreamsOfSpecifiedDelivery;
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 import android.app.Activity;
 import android.content.ComponentName;
@@ -390,8 +389,7 @@ public class DownloadDialog extends DialogFragment
                     }
                 }, throwable -> ErrorUtil.showSnackbar(context,
                         new ErrorInfo(throwable, UserAction.DOWNLOAD_OPEN_DIALOG,
-                                "Downloading video stream size",
-                                currentInfo.getServiceId()))));
+                                "Downloading video stream size", currentInfo))));
         disposables.add(StreamInfoWrapper.fetchMoreInfoForWrapper(getWrappedAudioStreams())
                 .subscribe(result -> {
                     if (dialogBinding.videoAudioGroup.getCheckedRadioButtonId()
@@ -400,8 +398,7 @@ public class DownloadDialog extends DialogFragment
                     }
                 }, throwable -> ErrorUtil.showSnackbar(context,
                         new ErrorInfo(throwable, UserAction.DOWNLOAD_OPEN_DIALOG,
-                                "Downloading audio stream size",
-                                currentInfo.getServiceId()))));
+                                "Downloading audio stream size", currentInfo))));
         disposables.add(StreamInfoWrapper.fetchMoreInfoForWrapper(wrappedSubtitleStreams)
                 .subscribe(result -> {
                     if (dialogBinding.videoAudioGroup.getCheckedRadioButtonId()
@@ -410,8 +407,7 @@ public class DownloadDialog extends DialogFragment
                     }
                 }, throwable -> ErrorUtil.showSnackbar(context,
                         new ErrorInfo(throwable, UserAction.DOWNLOAD_OPEN_DIALOG,
-                                "Downloading subtitle stream size",
-                                currentInfo.getServiceId()))));
+                                "Downloading subtitle stream size", currentInfo))));
     }
 
     private void setupAudioTrackSpinner() {
@@ -751,7 +747,6 @@ public class DownloadDialog extends DialogFragment
     }
 
     private void showFailedDialog(@StringRes final int msg) {
-        assureCorrectAppLanguage(requireContext());
         new AlertDialog.Builder(context)
                 .setTitle(R.string.general_error)
                 .setMessage(msg)

app/src/main/java/org/schabi/newpipe/error/AcraReportSender.java

@@ -36,8 +36,8 @@ public class AcraReportSender implements ReportSender {
         ErrorUtil.openActivity(context, new ErrorInfo(
                 new String[]{report.getString(ReportField.STACK_TRACE)},
                 UserAction.UI_ERROR,
-                ErrorInfo.SERVICE_NONE,
                 "ACRA report",
+                null,
                 R.string.app_ui_crash));
     }
 }

app/src/main/java/org/schabi/newpipe/error/ErrorActivity.java

@@ -1,7 +1,5 @@
 package org.schabi.newpipe.error;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
@@ -26,7 +24,7 @@ import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.util.external_communication.ShareUtils;
 
-import java.time.LocalDateTime;
+import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Arrays;
 import java.util.stream.Collectors;
@@ -67,10 +65,6 @@ public class ErrorActivity extends AppCompatActivity {
     public static final String ERROR_GITHUB_ISSUE_URL =
             "https://github.com/TeamNewPipe/NewPipe/issues";
 
-    public static final DateTimeFormatter CURRENT_TIMESTAMP_FORMATTER =
-            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
-
-
     private ErrorInfo errorInfo;
     private String currentTimeStamp;
 
@@ -83,7 +77,6 @@ public class ErrorActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
-        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
 
         ThemeHelper.setDayNightMode(this);
@@ -107,7 +100,9 @@ public class ErrorActivity extends AppCompatActivity {
 
         // important add guru meditation
         addGuruMeditation();
-        currentTimeStamp = CURRENT_TIMESTAMP_FORMATTER.format(LocalDateTime.now());
+        // print current time, as zoned ISO8601 timestamp
+        final ZonedDateTime now = ZonedDateTime.now();
+        currentTimeStamp = now.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
 
         activityErrorBinding.errorReportEmailButton.setOnClickListener(v ->
                 openPrivacyPolicyDialog(this, "EMAIL"));
@@ -120,7 +115,7 @@ public class ErrorActivity extends AppCompatActivity {
 
         // normal bugreport
         buildInfo(errorInfo);
-        activityErrorBinding.errorMessageView.setText(errorInfo.getMessageStringId());
+        activityErrorBinding.errorMessageView.setText(errorInfo.getMessage(this));
         activityErrorBinding.errorView.setText(formErrorText(errorInfo.getStackTraces()));
 
         // print stack trace once again for debugging:
@@ -250,6 +245,9 @@ public class ErrorActivity extends AppCompatActivity {
                     .append("\n* __Content Language:__ ").append(getContentLanguageString())
                     .append("\n* __App Language:__ ").append(getAppLanguage())
                     .append("\n* __Service:__ ").append(errorInfo.getServiceName())
+                    .append("\n* __Timestamp:__ ").append(currentTimeStamp)
+                    .append("\n* __Package:__ ").append(getPackageName())
+                    .append("\n* __Service:__ ").append(errorInfo.getServiceName())
                     .append("\n* __Version:__ ").append(BuildConfig.VERSION_NAME)
                     .append("\n* __OS:__ ").append(getOsString()).append("\n");
 
@@ -305,7 +303,7 @@ public class ErrorActivity extends AppCompatActivity {
     }
 
     private String getAppLanguage() {
-        return Localization.getAppLocale(getApplicationContext()).toString();
+        return Localization.getAppLocale().toString();
     }
 
     private String getOsString() {

app/src/main/java/org/schabi/newpipe/error/ErrorInfo.kt

@@ -1,115 +1,304 @@
 package org.schabi.newpipe.error
 
+import android.content.Context
 import android.os.Parcelable
 import androidx.annotation.StringRes
+import androidx.core.content.ContextCompat
 import com.google.android.exoplayer2.ExoPlaybackException
-import kotlinx.parcelize.IgnoredOnParcel
+import com.google.android.exoplayer2.upstream.HttpDataSource
+import com.google.android.exoplayer2.upstream.Loader
 import kotlinx.parcelize.Parcelize
 import org.schabi.newpipe.R
 import org.schabi.newpipe.extractor.Info
+import org.schabi.newpipe.extractor.ServiceList
+import org.schabi.newpipe.extractor.ServiceList.YouTube
 import org.schabi.newpipe.extractor.exceptions.AccountTerminatedException
+import org.schabi.newpipe.extractor.exceptions.AgeRestrictedContentException
 import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException
 import org.schabi.newpipe.extractor.exceptions.ContentNotSupportedException
 import org.schabi.newpipe.extractor.exceptions.ExtractionException
+import org.schabi.newpipe.extractor.exceptions.GeographicRestrictionException
+import org.schabi.newpipe.extractor.exceptions.PaidContentException
+import org.schabi.newpipe.extractor.exceptions.PrivateContentException
+import org.schabi.newpipe.extractor.exceptions.ReCaptchaException
+import org.schabi.newpipe.extractor.exceptions.SignInConfirmNotBotException
+import org.schabi.newpipe.extractor.exceptions.SoundCloudGoPlusContentException
+import org.schabi.newpipe.extractor.exceptions.UnsupportedContentInCountryException
+import org.schabi.newpipe.extractor.exceptions.YoutubeMusicPremiumContentException
 import org.schabi.newpipe.ktx.isNetworkRelated
-import org.schabi.newpipe.util.ServiceHelper
+import org.schabi.newpipe.player.mediasource.FailedMediaSource
+import org.schabi.newpipe.player.resolver.PlaybackResolver
+import java.net.UnknownHostException
 
+/**
+ * An error has occurred in the app. This class contains plain old parcelable data that can be used
+ * to report the error and to show it to the user along with correct action buttons.
+ */
 @Parcelize
-class ErrorInfo(
+class ErrorInfo private constructor(
     val stackTraces: Array<String>,
     val userAction: UserAction,
-    val serviceName: String,
     val request: String,
-    val messageStringId: Int
+    val serviceId: Int?,
+    private val message: ErrorMessage,
+    /**
+     * If `true`, a report button will be shown for this error. Otherwise the error is not something
+     * that can really be reported (e.g. a network issue, or content not being available at all).
+     */
+    val isReportable: Boolean,
+    /**
+     * If `true`, the process causing this error can be retried, otherwise not.
+     */
+    val isRetryable: Boolean,
+    /**
+     * If present, indicates that the exception was a ReCaptchaException, and this is the URL
+     * provided by the service that can be used to solve the ReCaptcha challenge.
+     */
+    val recaptchaUrl: String?,
+    /**
+     * If present, this resource can alternatively be opened in browser (useful if NewPipe is
+     * badly broken).
+     */
+    val openInBrowserUrl: String?,
 ) : Parcelable {
 
-    // no need to store throwable, all data for report is in other variables
-    // also, the throwable might not be serializable, see TeamNewPipe/NewPipe#7302
-    @IgnoredOnParcel
-    var throwable: Throwable? = null
-
-    private constructor(
+    @JvmOverloads
+    constructor(
         throwable: Throwable,
         userAction: UserAction,
-        serviceName: String,
-        request: String
+        request: String,
+        serviceId: Int? = null,
+        openInBrowserUrl: String? = null,
     ) : this(
         throwableToStringList(throwable),
         userAction,
-        serviceName,
         request,
-        getMessageStringId(throwable, userAction)
-    ) {
-        this.throwable = throwable
-    }
+        serviceId,
+        getMessage(throwable, userAction, serviceId),
+        isReportable(throwable),
+        isRetryable(throwable),
+        (throwable as? ReCaptchaException)?.url,
+        openInBrowserUrl,
+    )
 
-    private constructor(
-        throwable: List<Throwable>,
+    @JvmOverloads
+    constructor(
+        throwables: List<Throwable>,
         userAction: UserAction,
-        serviceName: String,
-        request: String
+        request: String,
+        serviceId: Int? = null,
+        openInBrowserUrl: String? = null,
     ) : this(
-        throwableListToStringList(throwable),
+        throwableListToStringList(throwables),
         userAction,
-        serviceName,
         request,
-        getMessageStringId(throwable.firstOrNull(), userAction)
-    ) {
-        this.throwable = throwable.firstOrNull()
+        serviceId,
+        getMessage(throwables.firstOrNull(), userAction, serviceId),
+        throwables.any(::isReportable),
+        throwables.isEmpty() || throwables.any(::isRetryable),
+        throwables.firstNotNullOfOrNull { it as? ReCaptchaException }?.url,
+        openInBrowserUrl,
+    )
+
+    // constructor to manually build ErrorInfo when no throwable is available
+    constructor(
+        stackTraces: Array<String>,
+        userAction: UserAction,
+        request: String,
+        serviceId: Int?,
+        @StringRes message: Int
+    ) :
+        this(
+            stackTraces, userAction, request, serviceId, ErrorMessage(message),
+            true, false, null, null
+        )
+
+    // constructor with only one throwable to extract service id and openInBrowserUrl from an Info
+    constructor(
+        throwable: Throwable,
+        userAction: UserAction,
+        request: String,
+        info: Info?,
+    ) :
+        this(throwable, userAction, request, info?.serviceId, info?.url)
+
+    // constructor with multiple throwables to extract service id and openInBrowserUrl from an Info
+    constructor(
+        throwables: List<Throwable>,
+        userAction: UserAction,
+        request: String,
+        info: Info?,
+    ) :
+        this(throwables, userAction, request, info?.serviceId, info?.url)
+
+    fun getServiceName(): String {
+        return getServiceName(serviceId)
     }
 
-    // constructors with single throwable
-    constructor(throwable: Throwable, userAction: UserAction, request: String) :
-        this(throwable, userAction, SERVICE_NONE, request)
-    constructor(throwable: Throwable, userAction: UserAction, request: String, serviceId: Int) :
-        this(throwable, userAction, ServiceHelper.getNameOfServiceById(serviceId), request)
-    constructor(throwable: Throwable, userAction: UserAction, request: String, info: Info?) :
-        this(throwable, userAction, getInfoServiceName(info), request)
-
-    // constructors with list of throwables
-    constructor(throwable: List<Throwable>, userAction: UserAction, request: String) :
-        this(throwable, userAction, SERVICE_NONE, request)
-    constructor(throwable: List<Throwable>, userAction: UserAction, request: String, serviceId: Int) :
-        this(throwable, userAction, ServiceHelper.getNameOfServiceById(serviceId), request)
-    constructor(throwable: List<Throwable>, userAction: UserAction, request: String, info: Info?) :
-        this(throwable, userAction, getInfoServiceName(info), request)
+    fun getMessage(context: Context): String {
+        return message.getString(context)
+    }
 
     companion object {
-        const val SERVICE_NONE = "none"
+        @Parcelize
+        class ErrorMessage(
+            @StringRes
+            private val stringRes: Int,
+            private vararg val formatArgs: String,
+        ) : Parcelable {
+            fun getString(context: Context): String {
+                return if (formatArgs.isEmpty()) {
+                    // use ContextCompat.getString() just in case context is not AppCompatActivity
+                    ContextCompat.getString(context, stringRes)
+                } else {
+                    // ContextCompat.getString() with formatArgs does not exist, so we just
+                    // replicate its source code but with formatArgs
+                    ContextCompat.getContextForLanguage(context).getString(stringRes, *formatArgs)
+                }
+            }
+        }
+
+        const val SERVICE_NONE = "<unknown_service>"
+
+        private fun getServiceName(serviceId: Int?) =
+            // not using getNameOfServiceById since we want to accept a nullable serviceId and we
+            // want to default to SERVICE_NONE
+            ServiceList.all()?.firstOrNull { it.serviceId == serviceId }?.serviceInfo?.name
+                ?: SERVICE_NONE
 
         fun throwableToStringList(throwable: Throwable) = arrayOf(throwable.stackTraceToString())
 
         fun throwableListToStringList(throwableList: List<Throwable>) =
             throwableList.map { it.stackTraceToString() }.toTypedArray()
 
-        private fun getInfoServiceName(info: Info?) =
-            if (info == null) SERVICE_NONE else ServiceHelper.getNameOfServiceById(info.serviceId)
-
-        @StringRes
-        private fun getMessageStringId(
+        fun getMessage(
             throwable: Throwable?,
-            action: UserAction
-        ): Int {
+            action: UserAction?,
+            serviceId: Int?,
+        ): ErrorMessage {
             return when {
-                throwable is AccountTerminatedException -> R.string.account_terminated
-                throwable is ContentNotAvailableException -> R.string.content_not_available
-                throwable != null && throwable.isNetworkRelated -> R.string.network_error
-                throwable is ContentNotSupportedException -> R.string.content_not_supported
-                throwable is ExtractionException -> R.string.parsing_error
+                // player exceptions
+                // some may be IOException, so do these checks before isNetworkRelated!
                 throwable is ExoPlaybackException -> {
-                    when (throwable.type) {
-                        ExoPlaybackException.TYPE_SOURCE -> R.string.player_stream_failure
-                        ExoPlaybackException.TYPE_UNEXPECTED -> R.string.player_recoverable_failure
-                        else -> R.string.player_unrecoverable_failure
+                    val cause = throwable.cause
+                    when {
+                        cause is HttpDataSource.InvalidResponseCodeException -> {
+                            if (cause.responseCode == 403) {
+                                if (serviceId == YouTube.serviceId) {
+                                    ErrorMessage(R.string.youtube_player_http_403)
+                                } else {
+                                    ErrorMessage(R.string.player_http_403)
+                                }
+                            } else {
+                                ErrorMessage(R.string.player_http_invalid_status, cause.responseCode.toString())
+                            }
+                        }
+                        cause is Loader.UnexpectedLoaderException && cause.cause is ExtractionException ->
+                            getMessage(throwable, action, serviceId)
+                        throwable.type == ExoPlaybackException.TYPE_SOURCE ->
+                            ErrorMessage(R.string.player_stream_failure)
+                        throwable.type == ExoPlaybackException.TYPE_UNEXPECTED ->
+                            ErrorMessage(R.string.player_recoverable_failure)
+                        else ->
+                            ErrorMessage(R.string.player_unrecoverable_failure)
                     }
                 }
-                action == UserAction.UI_ERROR -> R.string.app_ui_crash
-                action == UserAction.REQUESTED_COMMENTS -> R.string.error_unable_to_load_comments
-                action == UserAction.SUBSCRIPTION_CHANGE -> R.string.subscription_change_failed
-                action == UserAction.SUBSCRIPTION_UPDATE -> R.string.subscription_update_failed
-                action == UserAction.LOAD_IMAGE -> R.string.could_not_load_thumbnails
-                action == UserAction.DOWNLOAD_OPEN_DIALOG -> R.string.could_not_setup_download_menu
-                else -> R.string.general_error
+                throwable is FailedMediaSource.FailedMediaSourceException ->
+                    getMessage(throwable.cause, action, serviceId)
+                throwable is PlaybackResolver.ResolverException ->
+                    ErrorMessage(R.string.player_stream_failure)
+
+                // content not available exceptions
+                throwable is AccountTerminatedException ->
+                    throwable.message
+                        ?.takeIf { reason -> !reason.isEmpty() }
+                        ?.let { reason ->
+                            ErrorMessage(
+                                R.string.account_terminated_service_provides_reason,
+                                getServiceName(serviceId),
+                                reason
+                            )
+                        }
+                        ?: ErrorMessage(R.string.account_terminated)
+                throwable is AgeRestrictedContentException ->
+                    ErrorMessage(R.string.restricted_video_no_stream)
+                throwable is GeographicRestrictionException ->
+                    ErrorMessage(R.string.georestricted_content)
+                throwable is PaidContentException ->
+                    ErrorMessage(R.string.paid_content)
+                throwable is PrivateContentException ->
+                    ErrorMessage(R.string.private_content)
+                throwable is SoundCloudGoPlusContentException ->
+                    ErrorMessage(R.string.soundcloud_go_plus_content)
+                throwable is UnsupportedContentInCountryException ->
+                    ErrorMessage(R.string.unsupported_content_in_country)
+                throwable is YoutubeMusicPremiumContentException ->
+                    ErrorMessage(R.string.youtube_music_premium_content)
+                throwable is SignInConfirmNotBotException ->
+                    ErrorMessage(R.string.sign_in_confirm_not_bot_error, getServiceName(serviceId))
+                throwable is ContentNotAvailableException ->
+                    ErrorMessage(R.string.content_not_available)
+
+                // other extractor exceptions
+                throwable is ContentNotSupportedException ->
+                    ErrorMessage(R.string.content_not_supported)
+                // ReCaptchas will be handled in a special way anyway
+                throwable is ReCaptchaException ->
+                    ErrorMessage(R.string.recaptcha_request_toast)
+                // test this at the end as many exceptions could be a subclass of IOException
+                throwable != null && throwable.isNetworkRelated ->
+                    ErrorMessage(R.string.network_error)
+                // an extraction exception unrelated to the network
+                // is likely an issue with parsing the website
+                throwable is ExtractionException ->
+                    ErrorMessage(R.string.parsing_error)
+
+                // user actions (in case the exception is null or unrecognizable)
+                action == UserAction.UI_ERROR ->
+                    ErrorMessage(R.string.app_ui_crash)
+                action == UserAction.REQUESTED_COMMENTS ->
+                    ErrorMessage(R.string.error_unable_to_load_comments)
+                action == UserAction.SUBSCRIPTION_CHANGE ->
+                    ErrorMessage(R.string.subscription_change_failed)
+                action == UserAction.SUBSCRIPTION_UPDATE ->
+                    ErrorMessage(R.string.subscription_update_failed)
+                action == UserAction.LOAD_IMAGE ->
+                    ErrorMessage(R.string.could_not_load_thumbnails)
+                action == UserAction.DOWNLOAD_OPEN_DIALOG ->
+                    ErrorMessage(R.string.could_not_setup_download_menu)
+                else ->
+                    ErrorMessage(R.string.error_snackbar_message)
+            }
+        }
+
+        fun isReportable(throwable: Throwable?): Boolean {
+            return when (throwable) {
+                // we don't have an exception, so this is a manually built error, which likely
+                // indicates that it's important and is thus reportable
+                null -> true
+                // the service explicitly said that content is not available (e.g. age restrictions,
+                // video deleted, etc.), there is no use in letting users report it
+                is ContentNotAvailableException -> false
+                // we know the content is not supported, no need to let the user report it
+                is ContentNotSupportedException -> false
+                // happens often when there is no internet connection; we don't use
+                // `throwable.isNetworkRelated` since any `IOException` would make that function
+                // return true, but not all `IOException`s are network related
+                is UnknownHostException -> false
+                // by default, this is an unexpected exception, which the user could report
+                else -> true
+            }
+        }
+
+        fun isRetryable(throwable: Throwable?): Boolean {
+            return when (throwable) {
+                // we know the content is not available, retrying won't help
+                is ContentNotAvailableException -> false
+                // we know the content is not supported, retrying won't help
+                is ContentNotSupportedException -> false
+                // by default (including if throwable is null), enable retrying (though the retry
+                // button will be shown only if a way to perform the retry is implemented)
+                else -> true
             }
         }
     }

app/src/main/java/org/schabi/newpipe/error/ErrorPanelHelper.kt

@@ -2,7 +2,6 @@ package org.schabi.newpipe.error
 
 import android.content.Context
 import android.content.Intent
-import android.util.Log
 import android.view.View
 import android.widget.Button
 import android.widget.TextView
@@ -14,28 +13,14 @@ import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import io.reactivex.rxjava3.disposables.Disposable
 import org.schabi.newpipe.MainActivity
 import org.schabi.newpipe.R
-import org.schabi.newpipe.extractor.exceptions.AccountTerminatedException
-import org.schabi.newpipe.extractor.exceptions.AgeRestrictedContentException
-import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException
-import org.schabi.newpipe.extractor.exceptions.ContentNotSupportedException
-import org.schabi.newpipe.extractor.exceptions.GeographicRestrictionException
-import org.schabi.newpipe.extractor.exceptions.PaidContentException
-import org.schabi.newpipe.extractor.exceptions.PrivateContentException
-import org.schabi.newpipe.extractor.exceptions.ReCaptchaException
-import org.schabi.newpipe.extractor.exceptions.SoundCloudGoPlusContentException
-import org.schabi.newpipe.extractor.exceptions.YoutubeMusicPremiumContentException
-import org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty
 import org.schabi.newpipe.ktx.animate
-import org.schabi.newpipe.ktx.isInterruptedCaused
-import org.schabi.newpipe.ktx.isNetworkRelated
-import org.schabi.newpipe.util.ServiceHelper
 import org.schabi.newpipe.util.external_communication.ShareUtils
 import java.util.concurrent.TimeUnit
 
 class ErrorPanelHelper(
     private val fragment: Fragment,
     rootView: View,
-    onRetry: Runnable
+    onRetry: Runnable?,
 ) {
     private val context: Context = rootView.context!!
 
@@ -56,12 +41,15 @@ class ErrorPanelHelper(
         errorPanelRoot.findViewById(R.id.error_open_in_browser)
 
     private var errorDisposable: Disposable? = null
+    private var retryShouldBeShown: Boolean = (onRetry != null)
 
     init {
-        errorDisposable = errorRetryButton.clicks()
-            .debounce(300, TimeUnit.MILLISECONDS)
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribe { onRetry.run() }
+        if (onRetry != null) {
+            errorDisposable = errorRetryButton.clicks()
+                .debounce(300, TimeUnit.MILLISECONDS)
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe { onRetry.run() }
+        }
     }
 
     private fun ensureDefaultVisibility() {
@@ -75,64 +63,32 @@ class ErrorPanelHelper(
     }
 
     fun showError(errorInfo: ErrorInfo) {
-
-        if (errorInfo.throwable != null && errorInfo.throwable!!.isInterruptedCaused) {
-            if (DEBUG) {
-                Log.w(TAG, "onError() isInterruptedCaused! = [$errorInfo.throwable]")
-            }
-            return
-        }
-
         ensureDefaultVisibility()
+        errorTextView.text = errorInfo.getMessage(context)
 
-        if (errorInfo.throwable is ReCaptchaException) {
-            errorTextView.setText(R.string.recaptcha_request_toast)
-
-            showAndSetErrorButtonAction(
-                R.string.recaptcha_solve
-            ) {
+        if (errorInfo.recaptchaUrl != null) {
+            showAndSetErrorButtonAction(R.string.recaptcha_solve) {
                 // Starting ReCaptcha Challenge Activity
                 val intent = Intent(context, ReCaptchaActivity::class.java)
-                intent.putExtra(
-                    ReCaptchaActivity.RECAPTCHA_URL_EXTRA,
-                    (errorInfo.throwable as ReCaptchaException).url
-                )
+                intent.putExtra(ReCaptchaActivity.RECAPTCHA_URL_EXTRA, errorInfo.recaptchaUrl)
                 fragment.startActivityForResult(intent, ReCaptchaActivity.RECAPTCHA_REQUEST)
                 errorActionButton.setOnClickListener(null)
             }
-
-            errorRetryButton.isVisible = true
-            showAndSetOpenInBrowserButtonAction(errorInfo)
-        } else if (errorInfo.throwable is AccountTerminatedException) {
-            errorTextView.setText(R.string.account_terminated)
-
-            if (!isNullOrEmpty((errorInfo.throwable as AccountTerminatedException).message)) {
-                errorServiceInfoTextView.text = context.resources.getString(
-                    R.string.service_provides_reason,
-                    ServiceHelper.getSelectedService(context)?.serviceInfo?.name ?: "<unknown>"
-                )
-                errorServiceInfoTextView.isVisible = true
-
-                errorServiceExplanationTextView.text =
-                    (errorInfo.throwable as AccountTerminatedException).message
-                errorServiceExplanationTextView.isVisible = true
-            }
-        } else {
-            showAndSetErrorButtonAction(
-                R.string.error_snackbar_action
-            ) {
+        } else if (errorInfo.isReportable) {
+            showAndSetErrorButtonAction(R.string.error_snackbar_action) {
                 ErrorUtil.openActivity(context, errorInfo)
             }
+        }
 
-            errorTextView.setText(getExceptionDescription(errorInfo.throwable))
+        if (errorInfo.isRetryable) {
+            errorRetryButton.isVisible = retryShouldBeShown
+        }
 
-            if (errorInfo.throwable !is ContentNotAvailableException &&
-                errorInfo.throwable !is ContentNotSupportedException
-            ) {
-                // show retry button only for content which is not unavailable or unsupported
-                errorRetryButton.isVisible = true
+        if (errorInfo.openInBrowserUrl != null) {
+            errorOpenInBrowserButton.isVisible = true
+            errorOpenInBrowserButton.setOnClickListener {
+                ShareUtils.openUrlInBrowser(context, errorInfo.openInBrowserUrl)
             }
-            showAndSetOpenInBrowserButtonAction(errorInfo)
         }
 
         setRootVisible()
@@ -150,15 +106,6 @@ class ErrorPanelHelper(
         errorActionButton.setOnClickListener(listener)
     }
 
-    fun showAndSetOpenInBrowserButtonAction(
-        errorInfo: ErrorInfo
-    ) {
-        errorOpenInBrowserButton.isVisible = true
-        errorOpenInBrowserButton.setOnClickListener {
-            ShareUtils.openUrlInBrowser(context, errorInfo.request)
-        }
-    }
-
     fun showTextError(errorString: String) {
         ensureDefaultVisibility()
 
@@ -189,27 +136,5 @@ class ErrorPanelHelper(
     companion object {
         val TAG: String = ErrorPanelHelper::class.simpleName!!
         val DEBUG: Boolean = MainActivity.DEBUG
-
-        @StringRes
-        fun getExceptionDescription(throwable: Throwable?): Int {
-            return when (throwable) {
-                is AgeRestrictedContentException -> R.string.restricted_video_no_stream
-                is GeographicRestrictionException -> R.string.georestricted_content
-                is PaidContentException -> R.string.paid_content
-                is PrivateContentException -> R.string.private_content
-                is SoundCloudGoPlusContentException -> R.string.soundcloud_go_plus_content
-                is YoutubeMusicPremiumContentException -> R.string.youtube_music_premium_content
-                is ContentNotAvailableException -> R.string.content_not_available
-                is ContentNotSupportedException -> R.string.content_not_supported
-                else -> {
-                    // show retry button only for content which is not unavailable or unsupported
-                    if (throwable != null && throwable.isNetworkRelated) {
-                        R.string.network_error
-                    } else {
-                        R.string.error_snackbar_message
-                    }
-                }
-            }
-        }
     }
 }

app/src/main/java/org/schabi/newpipe/error/ErrorUtil.kt

@@ -10,8 +10,11 @@ import android.widget.Toast
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.PendingIntentCompat
+import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
+import androidx.preference.PreferenceManager
 import com.google.android.material.snackbar.Snackbar
+import org.schabi.newpipe.MainActivity
 import org.schabi.newpipe.R
 
 /**
@@ -35,12 +38,20 @@ class ErrorUtil {
          * activity (since the workflow would be interrupted anyway in that case). So never use this
          * for background services.
          *
+         * If the crashed occurred while the app was in the background open a notification instead
+         *
          * @param context the context to use to start the new activity
          * @param errorInfo the error info to be reported
          */
         @JvmStatic
         fun openActivity(context: Context, errorInfo: ErrorInfo) {
-            context.startActivity(getErrorActivityIntent(context, errorInfo))
+            if (PreferenceManager.getDefaultSharedPreferences(context)
+                .getBoolean(MainActivity.KEY_IS_IN_BACKGROUND, true)
+            ) {
+                createNotification(context, errorInfo)
+            } else {
+                context.startActivity(getErrorActivityIntent(context, errorInfo))
+            }
         }
 
         /**
@@ -111,7 +122,7 @@ class ErrorUtil {
                 )
                     .setSmallIcon(R.drawable.ic_bug_report)
                     .setContentTitle(context.getString(R.string.error_report_notification_title))
-                    .setContentText(context.getString(errorInfo.messageStringId))
+                    .setContentText(errorInfo.getMessage(context))
                     .setAutoCancel(true)
                     .setContentIntent(
                         PendingIntentCompat.getActivity(
@@ -126,9 +137,11 @@ class ErrorUtil {
             NotificationManagerCompat.from(context)
                 .notify(ERROR_REPORT_NOTIFICATION_ID, notificationBuilder.build())
 
-            // since the notification is silent, also show a toast, otherwise the user is confused
-            Toast.makeText(context, R.string.error_report_notification_toast, Toast.LENGTH_SHORT)
-                .show()
+            ContextCompat.getMainExecutor(context).execute {
+                // since the notification is silent, also show a toast, otherwise the user is confused
+                Toast.makeText(context, R.string.error_report_notification_toast, Toast.LENGTH_SHORT)
+                    .show()
+            }
         }
 
         private fun getErrorActivityIntent(context: Context, errorInfo: ErrorInfo): Intent {
@@ -143,10 +156,10 @@ class ErrorUtil {
                 // fallback to showing a notification if no root view is available
                 createNotification(context, errorInfo)
             } else {
-                Snackbar.make(rootView, R.string.error_snackbar_message, Snackbar.LENGTH_LONG)
+                Snackbar.make(rootView, errorInfo.getMessage(context), Snackbar.LENGTH_LONG)
                     .setActionTextColor(Color.YELLOW)
                     .setAction(context.getString(R.string.error_snackbar_action).uppercase()) {
-                        openActivity(context, errorInfo)
+                        context.startActivity(getErrorActivityIntent(context, errorInfo))
                     }.show()
             }
         }

app/src/main/java/org/schabi/newpipe/error/UserAction.java

@@ -32,7 +32,10 @@ public enum UserAction {
     PREFERENCES_MIGRATION("migration of preferences"),
     SHARE_TO_NEWPIPE("share to newpipe"),
     CHECK_FOR_NEW_APP_VERSION("check for new app version"),
-    OPEN_INFO_ITEM_DIALOG("open info item dialog");
+    OPEN_INFO_ITEM_DIALOG("open info item dialog"),
+    GETTING_MAIN_SCREEN_TAB("getting main screen tab"),
+    PLAY_ON_POPUP("play on popup"),
+    SUBSCRIPTIONS("loading subscriptions");
 
     private final String message;
 

app/src/main/java/org/schabi/newpipe/fragments/BlankFragment.java

@@ -7,16 +7,57 @@ import android.view.ViewGroup;
 
 import androidx.annotation.Nullable;
 
+import com.evernote.android.state.State;
+
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.error.ErrorInfo;
+import org.schabi.newpipe.error.ErrorPanelHelper;
 
 public class BlankFragment extends BaseFragment {
+
+    @State
+    @Nullable
+    ErrorInfo errorInfo;
+    @Nullable
+    ErrorPanelHelper errorPanel = null;
+
+    /**
+     * Builds a blank fragment that just says the app name and suggests clicking on search.
+     */
+    public BlankFragment() {
+        this(null);
+    }
+
+    /**
+     * @param errorInfo if null acts like {@link BlankFragment}, else shows an error panel.
+     */
+    public BlankFragment(@Nullable final ErrorInfo errorInfo) {
+        this.errorInfo = errorInfo;
+    }
+
     @Nullable
     @Override
     public View onCreateView(final LayoutInflater inflater, @Nullable final ViewGroup container,
                              final Bundle savedInstanceState) {
         setTitle("NewPipe");
-        return inflater.inflate(R.layout.fragment_blank, container, false);
+        final View view = inflater.inflate(R.layout.fragment_blank, container, false);
+        if (errorInfo != null) {
+            errorPanel = new ErrorPanelHelper(this, view, null);
+            errorPanel.showError(errorInfo);
+            view.findViewById(R.id.blank_page_content).setVisibility(View.GONE);
+        }
+        return view;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+
+        if (errorPanel != null) {
+            errorPanel.dispose();
+            errorPanel = null;
+        }
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/MainFragment.java

@@ -36,8 +36,9 @@ import com.google.android.material.tabs.TabLayout;
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.FragmentMainBinding;
+import org.schabi.newpipe.error.ErrorInfo;
 import org.schabi.newpipe.error.ErrorUtil;
-import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.error.UserAction;
 import org.schabi.newpipe.local.playlist.LocalPlaylistFragment;
 import org.schabi.newpipe.settings.tabs.Tab;
 import org.schabi.newpipe.settings.tabs.TabsManager;
@@ -303,9 +304,9 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
             final Fragment fragment;
             try {
                 fragment = tab.getFragment(context);
-            } catch (final ExtractionException e) {
-                ErrorUtil.showUiErrorSnackbar(context, "Getting fragment item", e);
-                return new BlankFragment();
+            } catch (final Throwable t) {
+                return new BlankFragment(new ErrorInfo(t, UserAction.GETTING_MAIN_SCREEN_TAB,
+                        "Tab " + tab.getClass().getSimpleName() + ":" + tab.getTabName(context)));
             }
 
             if (fragment instanceof BaseFragment) {

app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java

@@ -93,7 +93,7 @@ public class DescriptionFragment extends BaseDescriptionFragment {
 
         if (streamInfo.getLanguageInfo() != null) {
             addMetadataItem(inflater, layout, false, R.string.metadata_language,
-                    streamInfo.getLanguageInfo().getDisplayLanguage(getAppLocale(getContext())));
+                    streamInfo.getLanguageInfo().getDisplayLanguage(getAppLocale()));
         }
 
         addMetadataItem(inflater, layout, true, R.string.metadata_support,

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -93,6 +93,7 @@ import org.schabi.newpipe.local.dialog.PlaylistDialog;
 import org.schabi.newpipe.local.history.HistoryRecordManager;
 import org.schabi.newpipe.local.playlist.LocalPlaylistFragment;
 import org.schabi.newpipe.player.Player;
+import org.schabi.newpipe.player.PlayerIntentType;
 import org.schabi.newpipe.player.PlayerService;
 import org.schabi.newpipe.player.PlayerType;
 import org.schabi.newpipe.player.event.OnKeyDownListener;
@@ -236,11 +237,14 @@ public final class VideoDetailFragment
     // Service management
     //////////////////////////////////////////////////////////////////////////*/
     @Override
-    public void onServiceConnected(final Player connectedPlayer,
-                                   final PlayerService connectedPlayerService,
-                                   final boolean playAfterConnect) {
-        player = connectedPlayer;
+    public void onServiceConnected(@NonNull final PlayerService connectedPlayerService) {
         playerService = connectedPlayerService;
+    }
+
+    @Override
+    public void onPlayerConnected(@NonNull final Player connectedPlayer,
+                                  final boolean playAfterConnect) {
+        player = connectedPlayer;
 
         // It will do nothing if the player is not in fullscreen mode
         hideSystemUiIfNeeded();
@@ -272,22 +276,29 @@ public final class VideoDetailFragment
         updateOverlayPlayQueueButtonVisibility();
     }
 
+    @Override
+    public void onPlayerDisconnected() {
+        player = null;
+        // the binding could be null at this point, if the app is finishing
+        if (binding != null) {
+            restoreDefaultBrightness();
+        }
+    }
+
     @Override
     public void onServiceDisconnected() {
         playerService = null;
-        player = null;
-        restoreDefaultBrightness();
     }
 
 
     /*////////////////////////////////////////////////////////////////////////*/
 
     public static VideoDetailFragment getInstance(final int serviceId,
-                                                  @Nullable final String videoUrl,
+                                                  @Nullable final String url,
                                                   @NonNull final String name,
                                                   @Nullable final PlayQueue queue) {
         final VideoDetailFragment instance = new VideoDetailFragment();
-        instance.setInitialData(serviceId, videoUrl, name, queue);
+        instance.setInitialData(serviceId, url, name, queue);
         return instance;
     }
 
@@ -866,7 +877,7 @@ public final class VideoDetailFragment
                         }
                     }
                 }, throwable -> showError(new ErrorInfo(throwable, UserAction.REQUESTED_STREAM,
-                        url == null ? "no url" : url, serviceId)));
+                        url == null ? "no url" : url, serviceId, url)));
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -1156,8 +1167,12 @@ public final class VideoDetailFragment
         final PlayQueue queue = setupPlayQueueForIntent(false);
         tryAddVideoPlayerView();
 
-        final Intent playerIntent = NavigationHelper.getPlayerIntent(requireContext(),
-                PlayerService.class, queue, true, autoPlayEnabled);
+        final Context context = requireContext();
+        final Intent playerIntent =
+                NavigationHelper.getPlayerIntent(context, PlayerService.class, queue,
+                                PlayerIntentType.AllOthers)
+                        .putExtra(Player.PLAY_WHEN_READY, autoPlayEnabled)
+                        .putExtra(Player.RESUME_PLAYBACK, true);
         ContextCompat.startForegroundService(activity, playerIntent);
     }
 
@@ -1401,10 +1416,8 @@ public final class VideoDetailFragment
                             bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                         }
                         // Rebound to the service if it was closed via notification or mini player
-                        if (!playerHolder.isBound()) {
-                            playerHolder.startService(
-                                    false, VideoDetailFragment.this);
-                        }
+                        playerHolder.setListener(VideoDetailFragment.this);
+                        playerHolder.tryBindIfNeeded(context);
                         break;
                 }
             }
@@ -1413,7 +1426,8 @@ public final class VideoDetailFragment
         intentFilter.addAction(ACTION_SHOW_MAIN_PLAYER);
         intentFilter.addAction(ACTION_HIDE_MAIN_PLAYER);
         intentFilter.addAction(ACTION_PLAYER_STARTED);
-        activity.registerReceiver(broadcastReceiver, intentFilter);
+        ContextCompat.registerReceiver(activity, broadcastReceiver, intentFilter,
+                ContextCompat.RECEIVER_EXPORTED);
     }
 
 
@@ -1582,8 +1596,8 @@ public final class VideoDetailFragment
             }
 
             if (!info.getErrors().isEmpty()) {
-                showSnackBarError(new ErrorInfo(info.getErrors(),
-                        UserAction.REQUESTED_STREAM, info.getUrl(), info));
+                showSnackBarError(new ErrorInfo(info.getErrors(), UserAction.REQUESTED_STREAM,
+                        "Some info not extracted: " + info.getUrl(), info));
             }
         }
 
@@ -1736,7 +1750,7 @@ public final class VideoDetailFragment
         playQueue = queue;
         if (DEBUG) {
             Log.d(TAG, "onQueueUpdate() called with: serviceId = ["
-                    + serviceId + "], videoUrl = [" + url + "], name = ["
+                    + serviceId + "], url = [" + url + "], name = ["
                     + title + "], playQueue = [" + playQueue + "]");
         }
 
@@ -1848,13 +1862,16 @@ public final class VideoDetailFragment
 
     @Override
     public void onServiceStopped() {
-        setOverlayPlayPauseImage(false);
-        if (currentInfo != null) {
-            updateOverlayData(currentInfo.getName(),
-                    currentInfo.getUploaderName(),
-                    currentInfo.getThumbnails());
+        // the binding could be null at this point, if the app is finishing
+        if (binding != null) {
+            setOverlayPlayPauseImage(false);
+            if (currentInfo != null) {
+                updateOverlayData(currentInfo.getName(),
+                        currentInfo.getUploaderName(),
+                        currentInfo.getThumbnails());
+            }
+            updateOverlayPlayQueueButtonVisibility();
         }
-        updateOverlayPlayQueueButtonVisibility();
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListInfoFragment.java

@@ -8,6 +8,7 @@ import android.util.Log;
 import android.view.View;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
 import com.evernote.android.state.State;
 
@@ -42,6 +43,7 @@ public abstract class BaseListInfoFragment<I extends InfoItem, L extends ListInf
 
     private final UserAction errorUserAction;
     protected L currentInfo;
+    @Nullable
     protected Page currentNextPage;
     protected Disposable currentWorker;
 
@@ -151,7 +153,7 @@ public abstract class BaseListInfoFragment<I extends InfoItem, L extends ListInf
                     handleResult(result);
                 }, throwable ->
                         showError(new ErrorInfo(throwable, errorUserAction,
-                                "Start loading: " + url, serviceId)));
+                                "Start loading: " + url, serviceId, url)));
     }
 
     /**
@@ -182,7 +184,7 @@ public abstract class BaseListInfoFragment<I extends InfoItem, L extends ListInf
                     handleNextItems(infoItemsPage);
                 }, (@NonNull Throwable throwable) ->
                         dynamicallyShowErrorPanelOrSnackbar(new ErrorInfo(throwable,
-                                errorUserAction, "Loading more items: " + url, serviceId)));
+                                errorUserAction, "Loading more items: " + url, serviceId, url)));
     }
 
     private void forbidDownwardFocusScroll() {
@@ -208,7 +210,7 @@ public abstract class BaseListInfoFragment<I extends InfoItem, L extends ListInf
 
         if (!result.getErrors().isEmpty()) {
             dynamicallyShowErrorPanelOrSnackbar(new ErrorInfo(result.getErrors(), errorUserAction,
-                    "Get next items of: " + url, serviceId));
+                    "Get next items of: " + url, serviceId, url));
         }
     }
 
@@ -248,7 +250,7 @@ public abstract class BaseListInfoFragment<I extends InfoItem, L extends ListInf
 
             if (!errors.isEmpty()) {
                 dynamicallyShowErrorPanelOrSnackbar(new ErrorInfo(result.getErrors(),
-                        errorUserAction, "Start loading: " + url, serviceId));
+                        errorUserAction, "Start loading: " + url, serviceId, url));
             }
         }
     }

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelAboutFragment.java

@@ -81,9 +81,7 @@ public class ChannelAboutFragment extends BaseDescriptionFragment {
 
         if (channelInfo.getSubscriberCount() != UNKNOWN_SUBSCRIBER_COUNT) {
             addMetadataItem(inflater, layout, false, R.string.metadata_subscribers,
-                    Localization.localizeNumber(
-                            requireContext(),
-                            channelInfo.getSubscriberCount()));
+                    Localization.localizeNumber(channelInfo.getSubscriberCount()));
         }
 
         addImagesMetadataItem(inflater, layout, R.string.metadata_avatars,

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -120,67 +120,6 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
     // LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
 
-    @Override
-    public void onCreate(final Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        menuProvider = new MenuProvider() {
-            @Override
-            public void onCreateMenu(@NonNull final Menu menu,
-                                     @NonNull final MenuInflater inflater) {
-                inflater.inflate(R.menu.menu_channel, menu);
-
-                if (DEBUG) {
-                    Log.d(TAG, "onCreateOptionsMenu() called with: "
-                            + "menu = [" + menu + "], inflater = [" + inflater + "]");
-                }
-
-            }
-
-            @Override
-            public void onPrepareMenu(@NonNull final Menu menu) {
-                menuRssButton = menu.findItem(R.id.menu_item_rss);
-                menuNotifyButton = menu.findItem(R.id.menu_item_notify);
-                updateRssButton();
-                updateNotifyButton(channelSubscription);
-            }
-
-            @Override
-            public boolean onMenuItemSelected(@NonNull final MenuItem item) {
-                switch (item.getItemId()) {
-                    case R.id.menu_item_notify:
-                        final boolean value = !item.isChecked();
-                        item.setEnabled(false);
-                        setNotify(value);
-                        break;
-                    case R.id.action_settings:
-                        NavigationHelper.openSettings(requireContext());
-                        break;
-                    case R.id.menu_item_rss:
-                        if (currentInfo != null) {
-                            ShareUtils.openUrlInApp(requireContext(), currentInfo.getFeedUrl());
-                        }
-                        break;
-                    case R.id.menu_item_openInBrowser:
-                        if (currentInfo != null) {
-                            ShareUtils.openUrlInBrowser(requireContext(),
-                                    currentInfo.getOriginalUrl());
-                        }
-                        break;
-                    case R.id.menu_item_share:
-                        if (currentInfo != null) {
-                            ShareUtils.shareText(requireContext(), name,
-                                    currentInfo.getOriginalUrl(), currentInfo.getAvatars());
-                        }
-                        break;
-                    default:
-                        return false;
-                }
-                return true;
-            }
-        };
-        activity.addMenuProvider(menuProvider);
-    }
-
     @Override
     public void onAttach(@NonNull final Context context) {
         super.onAttach(context);
@@ -195,6 +134,67 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
         return binding.getRoot();
     }
 
+    @Override
+    public void onViewCreated(@NonNull final View rootView, final Bundle savedInstanceState) {
+        super.onViewCreated(rootView, savedInstanceState);
+            menuProvider = new MenuProvider() {
+                @Override
+                public void onCreateMenu(@NonNull final Menu menu,
+                                         @NonNull final MenuInflater inflater) {
+                    inflater.inflate(R.menu.menu_channel, menu);
+
+                    if (DEBUG) {
+                        Log.d(TAG, "onCreateOptionsMenu() called with: "
+                                + "menu = [" + menu + "], inflater = [" + inflater + "]");
+                    }
+
+                }
+
+                @Override
+                public void onPrepareMenu(@NonNull final Menu menu) {
+                    menuRssButton = menu.findItem(R.id.menu_item_rss);
+                    menuNotifyButton = menu.findItem(R.id.menu_item_notify);
+                    updateRssButton();
+                    updateNotifyButton(channelSubscription);
+                }
+
+                @Override
+                public boolean onMenuItemSelected(@NonNull final MenuItem item) {
+                    switch (item.getItemId()) {
+                        case R.id.menu_item_notify:
+                            final boolean value = !item.isChecked();
+                            item.setEnabled(false);
+                            setNotify(value);
+                            break;
+                        case R.id.action_settings:
+                            NavigationHelper.openSettings(requireContext());
+                            break;
+                        case R.id.menu_item_rss:
+                            if (currentInfo != null) {
+                                ShareUtils.openUrlInApp(requireContext(), currentInfo.getFeedUrl());
+                            }
+                            break;
+                        case R.id.menu_item_openInBrowser:
+                            if (currentInfo != null) {
+                                ShareUtils.openUrlInBrowser(requireContext(),
+                                        currentInfo.getOriginalUrl());
+                            }
+                            break;
+                        case R.id.menu_item_share:
+                            if (currentInfo != null) {
+                                ShareUtils.shareText(requireContext(), name,
+                                        currentInfo.getOriginalUrl(), currentInfo.getAvatars());
+                            }
+                            break;
+                        default:
+                            return false;
+                    }
+                    return true;
+                }
+            };
+            activity.addMenuProvider(menuProvider);
+    }
+
     @Override // called from onViewCreated in BaseFragment.onViewCreated
     protected void initViews(final View rootView, final Bundle savedInstanceState) {
         super.initViews(rootView, savedInstanceState);
@@ -232,6 +232,14 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
         binding.subChannelTitleView.setOnClickListener(openSubChannel);
     }
 
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        if (menuProvider != null) {
+            activity.removeMenuProvider(menuProvider);
+        }
+    }
+
     @Override
     public void onDestroy() {
         super.onDestroy();
@@ -240,7 +248,6 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
         }
         disposables.clear();
         binding = null;
-        activity.removeMenuProvider(menuProvider);
         menuProvider = null;
     }
 
@@ -570,7 +577,7 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
                     isLoading.set(false);
                     handleResult(result);
                 }, throwable -> showError(new ErrorInfo(throwable, UserAction.REQUESTED_CHANNEL,
-                        url == null ? "No URL" : url, serviceId)));
+                        url == null ? "No URL" : url, serviceId, url)));
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentRepliesFragment.java

@@ -28,6 +28,7 @@ import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.text.TextLinkifier;
+import org.schabi.newpipe.util.text.LongPressLinkMovementMethod;
 
 import java.util.Queue;
 import java.util.function.Supplier;
@@ -110,7 +111,7 @@ public final class CommentRepliesFragment
             TextLinkifier.fromDescription(binding.commentContent, item.getCommentText(),
                     HtmlCompat.FROM_HTML_MODE_LEGACY, getServiceById(item.getServiceId()),
                     item.getUrl(), disposables, null);
-
+            binding.commentContent.setMovementMethod(LongPressLinkMovementMethod.getInstance());
             return binding.getRoot();
         };
     }

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -54,6 +54,7 @@ import org.schabi.newpipe.extractor.MetaInfo;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.Page;
 import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.search.SearchExtractor;
 import org.schabi.newpipe.extractor.search.SearchInfo;
 import org.schabi.newpipe.extractor.services.peertube.linkHandler.PeertubeSearchQueryHandlerFactory;
@@ -144,6 +145,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
 
     private final SparseArrayCompat<String> menuItemToFilterName = new SparseArrayCompat<>();
     private StreamingService service;
+    @Nullable
     private Page nextPage;
     private boolean showLocalSuggestions = true;
     private boolean showRemoteSuggestions = true;
@@ -219,6 +221,15 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
     public void onViewCreated(@NonNull final View rootView, final Bundle savedInstanceState) {
         searchBinding = FragmentSearchBinding.bind(rootView);
         super.onViewCreated(rootView, savedInstanceState);
+
+        updateService();
+        // Add the service name to search string hint
+        // to make it more obvious which platform is being searched.
+        if (service != null) {
+            searchEditText.setHint(
+                    getString(R.string.search_with_service_name,
+                            service.getServiceInfo().getName()));
+        }
         showSearchOnStart();
         initSearchListeners();
     }
@@ -924,7 +935,21 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
             infoListAdapter.clearStreamItemList();
             showEmptyState();
         } else {
-            showError(new ErrorInfo(exception, UserAction.SEARCHED, searchString, serviceId));
+            showError(new ErrorInfo(exception, UserAction.SEARCHED, searchString, serviceId,
+                    getOpenInBrowserUrlForErrors()));
+        }
+    }
+
+    @Nullable
+    private String getOpenInBrowserUrlForErrors() {
+        if (TextUtils.isEmpty(searchString)) {
+            return null;
+        }
+        try {
+            return service.getSearchQHFactory().getUrl(searchString,
+                    Arrays.asList(contentFilter), sortFilter);
+        } catch (final NullPointerException | ParsingException ignored) {
+            return null;
         }
     }
 
@@ -936,6 +961,20 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
         filterItemCheckedId = item.getItemId();
         item.setChecked(true);
 
+        if (service != null) {
+            final boolean isNotFiltered = theContentFilter.isEmpty()
+                    || "all".equals(theContentFilter.get(0));
+            if (isNotFiltered) {
+                searchEditText.setHint(
+                        getString(R.string.search_with_service_name,
+                                service.getServiceInfo().getName()));
+            } else {
+                searchEditText.setHint(getString(R.string.search_with_service_name_and_filter,
+                        service.getServiceInfo().getName(),
+                        item.getTitle()));
+            }
+        }
+
         contentFilter = theContentFilter.toArray(new String[0]);
 
         if (!TextUtils.isEmpty(searchString)) {
@@ -998,7 +1037,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
                 && !(exceptions.size() == 1
                 && exceptions.get(0) instanceof SearchExtractor.NothingFoundException)) {
             showSnackBarError(new ErrorInfo(result.getErrors(), UserAction.SEARCHED,
-                    searchString, serviceId));
+                    searchString, serviceId, getOpenInBrowserUrlForErrors()));
         }
 
         searchSuggestion = result.getSearchSuggestion();
@@ -1065,15 +1104,26 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
     public void handleNextItems(final ListExtractor.InfoItemsPage<?> result) {
         showListFooter(false);
         infoListAdapter.addInfoItemList(result.getItems());
-        nextPage = result.getNextPage();
 
         if (!result.getErrors().isEmpty()) {
-            showSnackBarError(new ErrorInfo(result.getErrors(), UserAction.SEARCHED,
-                    "\"" + searchString + "\" → pageUrl: " + nextPage.getUrl() + ", "
-                            + "pageIds: " + nextPage.getIds() + ", "
-                            + "pageCookies: " + nextPage.getCookies(),
-                    serviceId));
+            // nextPage should be non-null at this point, because it refers to the page
+            // whose results are handled here, but let's check it anyway
+            if (nextPage == null) {
+                showSnackBarError(new ErrorInfo(result.getErrors(), UserAction.SEARCHED,
+                        "\"" + searchString + "\" → nextPage == null", serviceId,
+                        getOpenInBrowserUrlForErrors()));
+            } else {
+                showSnackBarError(new ErrorInfo(result.getErrors(), UserAction.SEARCHED,
+                        "\"" + searchString + "\" → pageUrl: " + nextPage.getUrl() + ", "
+                                + "pageIds: " + nextPage.getIds() + ", "
+                                + "pageCookies: " + nextPage.getCookies(),
+                        serviceId, getOpenInBrowserUrlForErrors()));
+            }
         }
+
+        // keep the reassignment of nextPage after the error handling to ensure that nextPage
+        // still holds the correct value during the error handling
+        nextPage = result.getNextPage();
         super.handleNextItems(result);
     }
 

app/src/main/java/org/schabi/newpipe/info_list/holder/CommentInfoItemHolder.java

@@ -101,14 +101,16 @@ public class CommentInfoItemHolder extends InfoItemHolder {
         }
         itemThumbnailView.setOnClickListener(view -> openCommentAuthor(item));
 
-
         // setup the top row, with pinned icon, author name and comment date
         itemPinnedView.setVisibility(item.isPinned() ? View.VISIBLE : View.GONE);
-        itemTitleView.setText(Localization.concatenateStrings(item.getUploaderName(),
-                Localization.relativeTimeOrTextual(itemBuilder.getContext(), item.getUploadDate(),
+        final String uploaderName = Localization.localizeUserName(item.getUploaderName());
+        itemTitleView.setText(Localization.concatenateStrings(
+                uploaderName,
+                Localization.relativeTimeOrTextual(
+                        itemBuilder.getContext(),
+                        item.getUploadDate(),
                         item.getTextualUploadDate())));
 
-
         // setup bottom row, with likes, heart and replies button
         itemLikesCountView.setText(
                 Localization.likeCount(itemBuilder.getContext(), item.getLikeCount()));

app/src/main/java/org/schabi/newpipe/ktx/Bundle.kt

@@ -7,3 +7,16 @@ import androidx.core.os.BundleCompat
 inline fun <reified T : Parcelable> Bundle.parcelableArrayList(key: String?): ArrayList<T>? {
     return BundleCompat.getParcelableArrayList(this, key, T::class.java)
 }
+
+fun Bundle?.toDebugString(): String {
+    if (this == null) {
+        return "null"
+    }
+    val string = StringBuilder("Bundle{")
+    for (key in this.keySet()) {
+        @Suppress("DEPRECATION") // we want this[key] to return items of any type
+        string.append(" ").append(key).append(" => ").append(this[key]).append(";")
+    }
+    string.append(" }")
+    return string.toString()
+}

app/src/main/java/org/schabi/newpipe/ktx/View.kt

@@ -17,8 +17,10 @@ import androidx.core.view.isGone
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
 import androidx.interpolator.view.animation.FastOutSlowInInterpolator
-import org.schabi.newpipe.MainActivity
 
+// logs in this class are disabled by default since it's usually not useful,
+// you can enable them by setting this flag to MainActivity.DEBUG
+private const val DEBUG = false
 private const val TAG = "ViewUtils"
 
 /**
@@ -38,7 +40,7 @@ fun View.animate(
     delay: Long = 0,
     execOnEnd: Runnable? = null
 ) {
-    if (MainActivity.DEBUG) {
+    if (DEBUG) {
         val id = try {
             resources.getResourceEntryName(id)
         } catch (e: Exception) {
@@ -51,7 +53,7 @@ fun View.animate(
         Log.d(TAG, "animate(): $msg")
     }
     if (isVisible && enterOrExit) {
-        if (MainActivity.DEBUG) {
+        if (DEBUG) {
             Log.d(TAG, "animate(): view was already visible > view = [$this]")
         }
         animate().setListener(null).cancel()
@@ -60,7 +62,7 @@ fun View.animate(
         execOnEnd?.run()
         return
     } else if ((isGone || isInvisible) && !enterOrExit) {
-        if (MainActivity.DEBUG) {
+        if (DEBUG) {
             Log.d(TAG, "animate(): view was already gone > view = [$this]")
         }
         animate().setListener(null).cancel()
@@ -89,7 +91,7 @@ fun View.animate(
  * @param colorEnd   the background color to end with
  */
 fun View.animateBackgroundColor(duration: Long, @ColorInt colorStart: Int, @ColorInt colorEnd: Int) {
-    if (MainActivity.DEBUG) {
+    if (DEBUG) {
         Log.d(
             TAG,
             "animateBackgroundColor() called with: view = [$this], duration = [$duration], " +
@@ -109,7 +111,7 @@ fun View.animateBackgroundColor(duration: Long, @ColorInt colorStart: Int, @Colo
 }
 
 fun View.animateHeight(duration: Long, targetHeight: Int): ValueAnimator {
-    if (MainActivity.DEBUG) {
+    if (DEBUG) {
         Log.d(TAG, "animateHeight: duration = [$duration], from $height to → $targetHeight in: $this")
     }
     val animator = ValueAnimator.ofFloat(height.toFloat(), targetHeight.toFloat())
@@ -127,7 +129,7 @@ fun View.animateHeight(duration: Long, targetHeight: Int): ValueAnimator {
 }
 
 fun View.animateRotation(duration: Long, targetRotation: Int) {
-    if (MainActivity.DEBUG) {
+    if (DEBUG) {
         Log.d(TAG, "animateRotation: duration = [$duration], from $rotation to → $targetRotation in: $this")
     }
     animate().setListener(null).cancel()

app/src/main/java/org/schabi/newpipe/local/BaseLocalListFragment.java

@@ -194,9 +194,6 @@ public abstract class BaseLocalListFragment<I, N> extends BaseStateFragment<I>
         if (itemsList != null) {
             animateHideRecyclerViewAllowingScrolling(itemsList);
         }
-        if (headerRootBinding != null) {
-            animate(headerRootBinding.getRoot(), false, 200);
-        }
     }
 
     @Override
@@ -205,9 +202,6 @@ public abstract class BaseLocalListFragment<I, N> extends BaseStateFragment<I>
         if (itemsList != null) {
             animate(itemsList, true, 200);
         }
-        if (headerRootBinding != null) {
-            animate(headerRootBinding.getRoot(), true, 200);
-        }
     }
 
     @Override
@@ -253,9 +247,6 @@ public abstract class BaseLocalListFragment<I, N> extends BaseStateFragment<I>
         if (itemsList != null) {
             animateHideRecyclerViewAllowingScrolling(itemsList);
         }
-        if (headerRootBinding != null) {
-            animate(headerRootBinding.getRoot(), false, 200);
-        }
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/local/feed/FeedFragment.kt

@@ -269,7 +269,12 @@ class FeedFragment : BaseStateFragment<FeedState>() {
 
     override fun onDestroyOptionsMenu() {
         super.onDestroyOptionsMenu()
-        activity?.supportActionBar?.subtitle = null
+        if (
+            (groupName != "") &&
+            (activity?.supportActionBar?.subtitle == groupName)
+        ) {
+            activity?.supportActionBar?.subtitle = null
+        }
     }
 
     override fun onDestroy() {
@@ -281,7 +286,13 @@ class FeedFragment : BaseStateFragment<FeedState>() {
         }
 
         super.onDestroy()
-        activity?.supportActionBar?.subtitle = null
+
+        if (
+            (groupName != "") &&
+            (activity?.supportActionBar?.subtitle == groupName)
+        ) {
+            activity?.supportActionBar?.subtitle = null
+        }
     }
 
     override fun onDestroyView() {

app/src/main/java/org/schabi/newpipe/local/feed/notifications/NotificationHelper.kt

@@ -88,7 +88,7 @@ class NotificationHelper(val context: Context) {
 
                 // Show individual stream notifications, set channel icon only if there is actually
                 // one
-                showStreamNotifications(newStreams, data.serviceId, bitmap)
+                showStreamNotifications(newStreams, data.serviceId, data.url, bitmap)
                 // Show summary notification
                 manager.notify(data.pseudoId, summaryBuilder.build())
 
@@ -97,7 +97,7 @@ class NotificationHelper(val context: Context) {
 
             override fun onBitmapFailed(e: Exception, errorDrawable: Drawable) {
                 // Show individual stream notifications
-                showStreamNotifications(newStreams, data.serviceId, null)
+                showStreamNotifications(newStreams, data.serviceId, data.url, null)
                 // Show summary notification
                 manager.notify(data.pseudoId, summaryBuilder.build())
                 iconLoadingTargets.remove(this) // allow it to be garbage-collected
@@ -118,10 +118,11 @@ class NotificationHelper(val context: Context) {
     private fun showStreamNotifications(
         newStreams: List<StreamInfoItem>,
         serviceId: Int,
+        channelUrl: String,
         channelIcon: Bitmap?
     ) {
         for (stream in newStreams) {
-            val notification = createStreamNotification(stream, serviceId, channelIcon)
+            val notification = createStreamNotification(stream, serviceId, channelUrl, channelIcon)
             manager.notify(stream.url.hashCode(), notification)
         }
     }
@@ -129,6 +130,7 @@ class NotificationHelper(val context: Context) {
     private fun createStreamNotification(
         item: StreamInfoItem,
         serviceId: Int,
+        channelUrl: String,
         channelIcon: Bitmap?
     ): Notification {
         return NotificationCompat.Builder(
@@ -139,7 +141,7 @@ class NotificationHelper(val context: Context) {
             .setLargeIcon(channelIcon)
             .setContentTitle(item.name)
             .setContentText(item.uploaderName)
-            .setGroup(item.uploaderUrl)
+            .setGroup(channelUrl)
             .setColor(ContextCompat.getColor(context, R.color.ic_launcher_background))
             .setColorized(true)
             .setAutoCancel(true)

app/src/main/java/org/schabi/newpipe/local/feed/notifications/NotificationWorker.kt

@@ -1,6 +1,8 @@
 package org.schabi.newpipe.local.feed.notifications
 
 import android.content.Context
+import android.content.pm.ServiceInfo
+import android.os.Build
 import android.util.Log
 import androidx.core.app.NotificationCompat
 import androidx.work.Constraints
@@ -83,7 +85,9 @@ class NotificationWorker(
             .setPriority(NotificationCompat.PRIORITY_LOW)
             .setContentTitle(applicationContext.getString(R.string.feed_notification_loading))
             .build()
-        setForegroundAsync(ForegroundInfo(FeedLoadService.NOTIFICATION_ID, notification))
+        // ServiceInfo constants are not used below Android Q, so 0 is set here
+        val serviceType = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC else 0
+        setForegroundAsync(ForegroundInfo(FeedLoadService.NOTIFICATION_ID, notification, serviceType))
     }
 
     companion object {

app/src/main/java/org/schabi/newpipe/local/feed/service/FeedLoadService.kt

@@ -31,6 +31,7 @@ import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.PendingIntentCompat
 import androidx.core.app.ServiceCompat
+import androidx.core.content.ContextCompat
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import io.reactivex.rxjava3.core.Flowable
 import io.reactivex.rxjava3.disposables.Disposable
@@ -200,7 +201,7 @@ class FeedLoadService : Service() {
                 }
             }
         }
-        registerReceiver(broadcastReceiver, IntentFilter(ACTION_CANCEL))
+        ContextCompat.registerReceiver(this, broadcastReceiver, IntentFilter(ACTION_CANCEL), ContextCompat.RECEIVER_NOT_EXPORTED)
     }
 
     // /////////////////////////////////////////////////////////////////////////

app/src/main/java/org/schabi/newpipe/local/playlist/ExportPlaylist.kt

@@ -0,0 +1,72 @@
+package org.schabi.newpipe.local.playlist
+
+import android.content.Context
+import org.schabi.newpipe.R
+import org.schabi.newpipe.database.playlist.PlaylistStreamEntry
+import org.schabi.newpipe.extractor.exceptions.ParsingException
+import org.schabi.newpipe.extractor.services.youtube.linkHandler.YoutubeStreamLinkHandlerFactory
+import org.schabi.newpipe.local.playlist.PlayListShareMode.JUST_URLS
+import org.schabi.newpipe.local.playlist.PlayListShareMode.WITH_TITLES
+import org.schabi.newpipe.local.playlist.PlayListShareMode.YOUTUBE_TEMP_PLAYLIST
+
+fun export(
+    shareMode: PlayListShareMode,
+    playlist: List<PlaylistStreamEntry>,
+    context: Context
+): String {
+    return when (shareMode) {
+        WITH_TITLES -> exportWithTitles(playlist, context)
+        JUST_URLS -> exportJustUrls(playlist)
+        YOUTUBE_TEMP_PLAYLIST -> exportAsYoutubeTempPlaylist(playlist)
+    }
+}
+
+fun exportWithTitles(
+    playlist: List<PlaylistStreamEntry>,
+    context: Context
+): String {
+
+    return playlist.asSequence()
+        .map { it.streamEntity }
+        .map { entity ->
+            context.getString(
+                R.string.video_details_list_item,
+                entity.title,
+                entity.url
+            )
+        }
+        .joinToString(separator = "\n")
+}
+
+fun exportJustUrls(playlist: List<PlaylistStreamEntry>): String {
+
+    return playlist.asSequence()
+        .map { it.streamEntity.url }
+        .joinToString(separator = "\n")
+}
+
+fun exportAsYoutubeTempPlaylist(playlist: List<PlaylistStreamEntry>): String {
+
+    val videoIDs = playlist.asReversed().asSequence()
+        .map { it.streamEntity.url }
+        .mapNotNull(::getYouTubeId)
+        .take(50) // YouTube limitation: temp playlists can't have more than 50 items
+        .toList()
+        .asReversed()
+        .joinToString(separator = ",")
+
+    return "https://www.youtube.com/watch_videos?video_ids=$videoIDs"
+}
+
+val linkHandler: YoutubeStreamLinkHandlerFactory = YoutubeStreamLinkHandlerFactory.getInstance()
+
+/**
+ * Gets the video id from a YouTube URL.
+ *
+ * @param url YouTube URL
+ * @return the video id
+ */
+fun getYouTubeId(url: String): String? {
+
+    return try { linkHandler.getId(url) } catch (e: ParsingException) { null }
+}

app/src/main/java/org/schabi/newpipe/local/playlist/LocalPlaylistFragment.java

@@ -2,8 +2,13 @@ package org.schabi.newpipe.local.playlist;
 
 import static org.schabi.newpipe.error.ErrorUtil.showUiErrorSnackbar;
 import static org.schabi.newpipe.ktx.ViewUtils.animate;
+import static org.schabi.newpipe.local.playlist.ExportPlaylistKt.export;
+import static org.schabi.newpipe.local.playlist.PlayListShareMode.JUST_URLS;
+import static org.schabi.newpipe.local.playlist.PlayListShareMode.WITH_TITLES;
+import static org.schabi.newpipe.local.playlist.PlayListShareMode.YOUTUBE_TEMP_PLAYLIST;
 import static org.schabi.newpipe.util.ThemeHelper.shouldUseGridLayout;
 
+
 import android.content.Context;
 import android.os.Bundle;
 import android.os.Parcelable;
@@ -27,7 +32,6 @@ import androidx.recyclerview.widget.RecyclerView;
 import androidx.viewbinding.ViewBinding;
 
 import com.evernote.android.state.State;
-
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 import org.schabi.newpipe.NewPipeDatabase;
@@ -385,34 +389,41 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
     }
 
     /**
-     * Shares the playlist as a list of stream URLs if {@code shouldSharePlaylistDetails} is
-     * set to {@code false}. Shares the playlist name along with a list of video titles and URLs
-     * if {@code shouldSharePlaylistDetails} is set to {@code true}.
+     * Shares the playlist in one of 3 ways, depending on the value of {@code shareMode}:
+     * <ul>
+     *     <li>{@code JUST_URLS}: shares the URLs only.</li>
+     *     <li>{@code WITH_TITLES}: each entry in the list is accompanied by its title.</li>
+     *     <li>{@code YOUTUBE_TEMP_PLAYLIST}: shares as a YouTube temporary playlist.</li>
+     * </ul>
      *
-     * @param shouldSharePlaylistDetails Whether the playlist details should be included in the
-     *                                   shared content.
+     * @param shareMode The way the playlist should be shared.
      */
-    private void sharePlaylist(final boolean shouldSharePlaylistDetails) {
+    private void sharePlaylist(final PlayListShareMode shareMode) {
         final Context context = requireContext();
 
         disposables.add(playlistManager.getPlaylistStreams(playlistId)
-                .flatMapSingle(playlist -> Single.just(playlist.stream()
-                        .map(PlaylistStreamEntry::getStreamEntity)
-                        .map(streamEntity -> {
-                            if (shouldSharePlaylistDetails) {
-                                return context.getString(R.string.video_details_list_item,
-                                        streamEntity.getTitle(), streamEntity.getUrl());
-                            } else {
-                                return streamEntity.getUrl();
-                            }
-                        })
-                        .collect(Collectors.joining("\n"))))
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(urlsText -> ShareUtils.shareText(
-                                context, name, shouldSharePlaylistDetails
-                                        ? context.getString(R.string.share_playlist_content_details,
-                                        name, urlsText) : urlsText),
-                        throwable -> showUiErrorSnackbar(this, "Sharing playlist", throwable)));
+            .flatMapSingle(playlist -> Single.just(export(
+
+                shareMode,
+                playlist,
+                context
+            )))
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(
+                urlsText -> {
+
+                    final String content = shareMode == WITH_TITLES
+                        ? context.getString(R.string.share_playlist_content_details,
+                                            name,
+                                            urlsText
+                                           )
+                        : urlsText;
+
+                    ShareUtils.shareText(context, name, content);
+                },
+                throwable -> showUiErrorSnackbar(this, "Sharing playlist", throwable)
+            )
+        );
     }
 
     public void removeWatchedStreams(final boolean removePartiallyWatched) {
@@ -872,13 +883,15 @@ public class LocalPlaylistFragment extends BaseLocalListFragment<List<PlaylistSt
     private void createShareConfirmationDialog() {
         new AlertDialog.Builder(requireContext())
                 .setTitle(R.string.share_playlist)
-                .setMessage(R.string.share_playlist_with_titles_message)
                 .setCancelable(true)
                 .setPositiveButton(R.string.share_playlist_with_titles, (dialog, which) ->
-                    sharePlaylist(/* shouldSharePlaylistDetails= */ true)
+                    sharePlaylist(WITH_TITLES)
+                )
+                .setNeutralButton(R.string.share_playlist_as_youtube_temporary_playlist,
+                    (dialog, which) -> sharePlaylist(YOUTUBE_TEMP_PLAYLIST)
                 )
                 .setNegativeButton(R.string.share_playlist_with_list, (dialog, which) ->
-                    sharePlaylist(/* shouldSharePlaylistDetails= */ false)
+                    sharePlaylist(JUST_URLS)
                 )
                 .show();
     }

app/src/main/java/org/schabi/newpipe/local/playlist/PlayListShareMode.java

@@ -0,0 +1,8 @@
+package org.schabi.newpipe.local.playlist;
+
+public enum PlayListShareMode {
+
+    JUST_URLS,
+    WITH_TITLES,
+    YOUTUBE_TEMP_PLAYLIST
+}

app/src/main/java/org/schabi/newpipe/local/playlist/RemotePlaylistManager.java

@@ -26,6 +26,10 @@ public class RemotePlaylistManager {
         return playlistRemoteTable.getPlaylists().subscribeOn(Schedulers.io());
     }
 
+    public Flowable<PlaylistRemoteEntity> getPlaylist(final long playlistId) {
+        return playlistRemoteTable.getPlaylist(playlistId).subscribeOn(Schedulers.io());
+    }
+
     public Flowable<List<PlaylistRemoteEntity>> getPlaylist(final PlaylistInfo info) {
         return playlistRemoteTable.getPlaylist(info.getServiceId(), info.getUrl())
                 .subscribeOn(Schedulers.io());

app/src/main/java/org/schabi/newpipe/local/subscription/ImportConfirmationDialog.java

@@ -1,7 +1,5 @@
 package org.schabi.newpipe.local.subscription;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.app.Dialog;
 import android.content.Intent;
 import android.os.Bundle;
@@ -35,7 +33,6 @@ public class ImportConfirmationDialog extends DialogFragment {
     @NonNull
     @Override
     public Dialog onCreateDialog(@Nullable final Bundle savedInstanceState) {
-        assureCorrectAppLanguage(getContext());
         return new AlertDialog.Builder(requireContext())
                 .setMessage(R.string.import_network_expensive_warning)
                 .setCancelable(true)

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -13,6 +13,7 @@ import android.view.MenuItem
 import android.view.SubMenu
 import android.view.View
 import android.view.ViewGroup
+import android.webkit.MimeTypeMap
 import android.widget.Toast
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts.StartActivityForResult
@@ -460,6 +461,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     }
 
     companion object {
-        const val JSON_MIME_TYPE = "application/json"
+        val JSON_MIME_TYPE = MimeTypeMap.getSingleton()
+            .getMimeTypeFromExtension("json") ?: "application/octet-stream"
     }
 }

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionsImportFragment.java

@@ -89,8 +89,8 @@ public class SubscriptionsImportFragment extends BaseFragment {
         if (supportedSources.isEmpty() && currentServiceId != Constants.NO_SERVICE_ID) {
             ErrorUtil.showSnackbar(activity,
                     new ErrorInfo(new String[]{}, UserAction.SUBSCRIPTION_IMPORT_EXPORT,
-                            ServiceHelper.getNameOfServiceById(currentServiceId),
                             "Service does not support importing subscriptions",
+                            currentServiceId,
                             R.string.general_error));
             activity.finish();
         }

app/src/main/java/org/schabi/newpipe/player/PlayQueueActivity.java

@@ -2,7 +2,6 @@ package org.schabi.newpipe.player;
 
 import static org.schabi.newpipe.QueueItemMenuUtil.openPopupMenu;
 import static org.schabi.newpipe.player.helper.PlayerHelper.formatSpeed;
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 import android.content.ComponentName;
 import android.content.Intent;
@@ -84,7 +83,6 @@ public final class PlayQueueActivity extends AppCompatActivity
 
     @Override
     protected void onCreate(final Bundle savedInstanceState) {
-        assureCorrectAppLanguage(this);
         super.onCreate(savedInstanceState);
         ThemeHelper.setTheme(this, ServiceHelper.getSelectedServiceId(this));
 
@@ -183,7 +181,10 @@ public final class PlayQueueActivity extends AppCompatActivity
     ////////////////////////////////////////////////////////////////////////////
 
     private void bind() {
+        // Note: this code should not really exist, and PlayerHolder should be used instead, but
+        // it will be rewritten when NewPlayer will replace the current player.
         final Intent bindIntent = new Intent(this, PlayerService.class);
+        bindIntent.setAction(PlayerService.BIND_PLAYER_HOLDER_ACTION);
         final boolean success = bindService(bindIntent, serviceConnection, BIND_AUTO_CREATE);
         if (!success) {
             unbindService(serviceConnection);
@@ -221,7 +222,7 @@ public final class PlayQueueActivity extends AppCompatActivity
                 Log.d(TAG, "Player service is connected");
 
                 if (service instanceof PlayerService.LocalBinder) {
-                    player = ((PlayerService.LocalBinder) service).getPlayer();
+                    player = ((PlayerService.LocalBinder) service).getService().getPlayer();
                 }
 
                 if (player == null || player.getPlayQueue() == null || player.exoPlayerIsNull()) {

app/src/main/java/org/schabi/newpipe/player/Player.java

@@ -24,12 +24,12 @@ import static com.google.android.exoplayer2.Player.DISCONTINUITY_REASON_SEEK_ADJ
 import static com.google.android.exoplayer2.Player.DISCONTINUITY_REASON_SKIP;
 import static com.google.android.exoplayer2.Player.DiscontinuityReason;
 import static com.google.android.exoplayer2.Player.Listener;
+import static com.google.android.exoplayer2.Player.REPEAT_MODE_ALL;
 import static com.google.android.exoplayer2.Player.REPEAT_MODE_OFF;
 import static com.google.android.exoplayer2.Player.REPEAT_MODE_ONE;
 import static com.google.android.exoplayer2.Player.RepeatMode;
 import static org.schabi.newpipe.extractor.ServiceList.YouTube;
 import static org.schabi.newpipe.extractor.utils.Utils.isNullOrEmpty;
-import static org.schabi.newpipe.player.helper.PlayerHelper.nextRepeatMode;
 import static org.schabi.newpipe.player.helper.PlayerHelper.retrievePlaybackParametersFromPrefs;
 import static org.schabi.newpipe.player.helper.PlayerHelper.retrieveSeekDurationFromPreferences;
 import static org.schabi.newpipe.player.helper.PlayerHelper.savePlaybackParametersToPrefs;
@@ -44,7 +44,6 @@ import static org.schabi.newpipe.player.notification.NotificationConstants.ACTIO
 import static org.schabi.newpipe.player.notification.NotificationConstants.ACTION_SHUFFLE;
 import static org.schabi.newpipe.util.ListHelper.getPopupResolutionIndex;
 import static org.schabi.newpipe.util.ListHelper.getResolutionIndex;
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 
 import android.content.BroadcastReceiver;
@@ -55,11 +54,14 @@ import android.content.SharedPreferences;
 import android.graphics.Bitmap;
 import android.graphics.drawable.Drawable;
 import android.media.AudioManager;
+import android.support.v4.media.session.MediaSessionCompat;
 import android.util.Log;
 import android.view.LayoutInflater;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.IntentCompat;
 import androidx.core.math.MathUtils;
 import androidx.preference.PreferenceManager;
 
@@ -71,6 +73,7 @@ import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player.PositionInfo;
 import com.google.android.exoplayer2.Timeline;
 import com.google.android.exoplayer2.Tracks;
+import com.google.android.exoplayer2.ext.mediasession.MediaSessionConnector;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.text.CueGroup;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
@@ -86,8 +89,8 @@ import org.schabi.newpipe.databinding.PlayerBinding;
 import org.schabi.newpipe.error.ErrorInfo;
 import org.schabi.newpipe.error.ErrorUtil;
 import org.schabi.newpipe.error.UserAction;
-import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.Image;
+import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.StreamType;
 import org.schabi.newpipe.extractor.stream.VideoStream;
@@ -107,6 +110,7 @@ import org.schabi.newpipe.player.playback.MediaSourceManager;
 import org.schabi.newpipe.player.playback.PlaybackListener;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
+import org.schabi.newpipe.player.playqueue.SinglePlayQueue;
 import org.schabi.newpipe.player.resolver.AudioPlaybackResolver;
 import org.schabi.newpipe.player.resolver.VideoPlaybackResolver;
 import org.schabi.newpipe.player.resolver.VideoPlaybackResolver.SourceType;
@@ -116,21 +120,25 @@ import org.schabi.newpipe.player.ui.PlayerUiList;
 import org.schabi.newpipe.player.ui.PopupPlayerUi;
 import org.schabi.newpipe.player.ui.VideoPlayerUi;
 import org.schabi.newpipe.util.DependentPreferenceHelper;
+import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.NavigationHelper;
-import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.SerializedCache;
 import org.schabi.newpipe.util.StreamTypeUtil;
+import org.schabi.newpipe.util.image.PicassoHelper;
 
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.IntStream;
 
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
 import io.reactivex.rxjava3.core.Observable;
+import io.reactivex.rxjava3.core.Single;
 import io.reactivex.rxjava3.disposables.CompositeDisposable;
 import io.reactivex.rxjava3.disposables.Disposable;
 import io.reactivex.rxjava3.disposables.SerialDisposable;
+import io.reactivex.rxjava3.schedulers.Schedulers;
 
 public final class Player implements PlaybackListener, Listener {
     public static final boolean DEBUG = MainActivity.DEBUG;
@@ -152,15 +160,13 @@ public final class Player implements PlaybackListener, Listener {
     // Intent
     //////////////////////////////////////////////////////////////////////////*/
 
-    public static final String REPEAT_MODE = "repeat_mode";
     public static final String PLAYBACK_QUALITY = "playback_quality";
     public static final String PLAY_QUEUE_KEY = "play_queue_key";
-    public static final String ENQUEUE = "enqueue";
-    public static final String ENQUEUE_NEXT = "enqueue_next";
     public static final String RESUME_PLAYBACK = "resume_playback";
     public static final String PLAY_WHEN_READY = "play_when_ready";
     public static final String PLAYER_TYPE = "player_type";
-    public static final String IS_MUTED = "is_muted";
+    public static final String PLAYER_INTENT_TYPE = "player_intent_type";
+    public static final String PLAYER_INTENT_DATA = "player_intent_data";
 
     /*//////////////////////////////////////////////////////////////////////////
     // Time constants
@@ -245,6 +251,8 @@ public final class Player implements PlaybackListener, Listener {
     private final SerialDisposable progressUpdateDisposable = new SerialDisposable();
     @NonNull
     private final CompositeDisposable databaseUpdateDisposable = new CompositeDisposable();
+    @NonNull
+    private final CompositeDisposable streamItemDisposable = new CompositeDisposable();
 
     // This is the only listener we need for thumbnail loading, since there is always at most only
     // one thumbnail being loaded at a time. This field is also here to maintain a strong reference,
@@ -269,7 +277,16 @@ public final class Player implements PlaybackListener, Listener {
     //////////////////////////////////////////////////////////////////////////*/
     //region Constructor
 
-    public Player(@NonNull final PlayerService service) {
+    /**
+     * @param service the service this player resides in
+     * @param mediaSession used to build the {@link MediaSessionPlayerUi}, lives in the service and
+     *                     could possibly be reused with multiple player instances
+     * @param sessionConnector used to build the {@link MediaSessionPlayerUi}, lives in the service
+     *                         and could possibly be reused with multiple player instances
+     */
+    public Player(@NonNull final PlayerService service,
+                  @NonNull final MediaSessionCompat mediaSession,
+                  @NonNull final MediaSessionConnector sessionConnector) {
         this.service = service;
         context = service;
         prefs = PreferenceManager.getDefaultSharedPreferences(context);
@@ -302,7 +319,7 @@ public final class Player implements PlaybackListener, Listener {
         // notification ui in the UIs list, since the notification depends on the media session in
         // PlayerUi#initPlayer(), and UIs.call() guarantees UI order is preserved.
         UIs = new PlayerUiList(
-                new MediaSessionPlayerUi(this),
+                new MediaSessionPlayerUi(this, mediaSession, sessionConnector),
                 new NotificationPlayerUi(this)
         );
     }
@@ -336,49 +353,121 @@ public final class Player implements PlaybackListener, Listener {
 
     @SuppressWarnings("MethodLength")
     public void handleIntent(@NonNull final Intent intent) {
-        // fail fast if no play queue was provided
-        final String queueCache = intent.getStringExtra(PLAY_QUEUE_KEY);
-        if (queueCache == null) {
+        final var playerIntentType = IntentCompat.getSerializableExtra(intent, PLAYER_INTENT_TYPE,
+                PlayerIntentType.class);
+        if (playerIntentType == null) {
             return;
         }
-        final PlayQueue newQueue = SerializedCache.getInstance().take(queueCache, PlayQueue.class);
-        if (newQueue == null) {
-            return;
+        // TODO: this should be in the second switch below, but I’m not sure whether I
+        // can move the initUIs stuff without breaking the setup for edge cases somehow.
+        // when playing from a timestamp, keep the current player as-is.
+        if (playerIntentType != PlayerIntentType.TimestampChange) {
+            playerType = IntentCompat.getSerializableExtra(intent, PLAYER_TYPE, PlayerType.class);
         }
-
-        final PlayerType oldPlayerType = playerType;
-        playerType = PlayerType.retrieveFromIntent(intent);
         initUIsForCurrentPlayerType();
-        // We need to setup audioOnly before super(), see "sourceOf"
         isAudioOnly = audioPlayerSelected();
 
         if (intent.hasExtra(PLAYBACK_QUALITY)) {
             videoResolver.setPlaybackQuality(intent.getStringExtra(PLAYBACK_QUALITY));
         }
 
-        // Resolve enqueue intents
-        if (intent.getBooleanExtra(ENQUEUE, false) && playQueue != null) {
-            playQueue.append(newQueue.getStreams());
-            return;
+        final boolean playWhenReady = intent.getBooleanExtra(PLAY_WHEN_READY, true);
 
-            // Resolve enqueue next intents
-        } else if (intent.getBooleanExtra(ENQUEUE_NEXT, false) && playQueue != null) {
-            final int currentIndex = playQueue.getIndex();
-            playQueue.append(newQueue.getStreams());
-            playQueue.move(playQueue.size() - 1, currentIndex + 1);
+        switch (playerIntentType) {
+            case Enqueue -> {
+                if (playQueue != null) {
+                    final PlayQueue newQueue = getPlayQueueFromCache(intent);
+                    if (newQueue == null) {
+                        return;
+                    }
+                    playQueue.append(newQueue.getStreams());
+                    return;
+                }
+
+                // TODO: This falls through to the old logic, there was no playQueue
+                // yet so we should start the player and add the new video
+                break;
+            }
+            case EnqueueNext -> {
+                if (playQueue != null) {
+                    final PlayQueue newQueue = getPlayQueueFromCache(intent);
+                    if (newQueue == null) {
+                        return;
+                    }
+                    final PlayQueueItem newItem = newQueue.getStreams().get(0);
+                    newQueue.enqueueNext(newItem, false);
+                    return;
+                }
+
+                // TODO: This falls through to the old logic, there was no playQueue
+                // yet so we should start the player and add the new video
+                break;
+            }
+            case TimestampChange -> {
+                final var data = Objects.requireNonNull(IntentCompat.getParcelableExtra(intent,
+                        PLAYER_INTENT_DATA, TimestampChangeData.class));
+                final Single<StreamInfo> single =
+                        ExtractorHelper.getStreamInfo(data.getServiceId(), data.getUrl(), false);
+                streamItemDisposable.add(single.subscribeOn(Schedulers.io())
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .subscribe(info -> {
+                            final @Nullable PlayQueue oldPlayQueue = playQueue;
+                            info.setStartPosition(data.getSeconds());
+                            final PlayQueueItem playQueueItem = new PlayQueueItem(info);
+
+                            // If the stream is already playing,
+                            // we can just seek to the appropriate timestamp
+                            if (oldPlayQueue != null
+                                    && playQueueItem.isSameItem(oldPlayQueue.getItem())) {
+                                // Player can have state = IDLE when playback is stopped or failed
+                                // and we should retry in this case
+                                if (simpleExoPlayer.getPlaybackState()
+                                        == com.google.android.exoplayer2.Player.STATE_IDLE) {
+                                    simpleExoPlayer.prepare();
+                                }
+                                simpleExoPlayer.seekTo(oldPlayQueue.getIndex(),
+                                        data.getSeconds() * 1000L);
+                                simpleExoPlayer.setPlayWhenReady(playWhenReady);
+
+                            } else {
+                                final PlayQueue newPlayQueue;
+
+                                // If there is no queue yet, just add our item
+                                if (oldPlayQueue == null) {
+                                    newPlayQueue = new SinglePlayQueue(playQueueItem);
+
+                                // else we add the timestamped stream behind the current video
+                                // and start playing it.
+                                } else {
+                                    oldPlayQueue.enqueueNext(playQueueItem, true);
+                                    oldPlayQueue.offsetIndex(1);
+                                    newPlayQueue = oldPlayQueue;
+                                }
+                                initPlayback(newPlayQueue, playWhenReady);
+                            }
+
+                        }, throwable -> {
+                            // This will only show a snackbar if the passed context has a root view:
+                            // otherwise it will resort to showing a notification, so we are safe
+                            // here.
+                            final var info = new ErrorInfo(throwable, UserAction.PLAY_ON_POPUP,
+                                    data.getUrl(), null, data.getUrl());
+                            ErrorUtil.createNotification(context, info);
+                        }));
+                return;
+            }
+            case AllOthers -> {
+                // fallthrough; TODO: put other intent data in separate cases
+            }
+        }
+
+        final PlayQueue newQueue = getPlayQueueFromCache(intent);
+        if (newQueue == null) {
             return;
         }
 
-        final PlaybackParameters savedParameters = retrievePlaybackParametersFromPrefs(this);
-        final float playbackSpeed = savedParameters.speed;
-        final float playbackPitch = savedParameters.pitch;
-        final boolean playbackSkipSilence = getPrefs().getBoolean(getContext().getString(
-                R.string.playback_skip_silence_key), getPlaybackSkipSilence());
-
+        // branching parameters for below
         final boolean samePlayQueue = playQueue != null && playQueue.equalStreamsAndIndex(newQueue);
-        final int repeatMode = intent.getIntExtra(REPEAT_MODE, getRepeatMode());
-        final boolean playWhenReady = intent.getBooleanExtra(PLAY_WHEN_READY, true);
-        final boolean isMuted = intent.getBooleanExtra(IS_MUTED, isMuted());
 
         /*
          * TODO As seen in #7427 this does not work:
@@ -393,7 +482,7 @@ public final class Player implements PlaybackListener, Listener {
         if (!exoPlayerIsNull()
                 && newQueue.size() == 1 && newQueue.getItem() != null
                 && playQueue != null && playQueue.size() == 1 && playQueue.getItem() != null
-                && newQueue.getItem().getUrl().equals(playQueue.getItem().getUrl())
+                && newQueue.getItem().isSameItem(playQueue.getItem())
                 && newQueue.getItem().getRecoveryPosition() != PlayQueueItem.RECOVERY_UNSET) {
             // Player can have state = IDLE when playback is stopped or failed
             // and we should retry in this case
@@ -419,7 +508,8 @@ public final class Player implements PlaybackListener, Listener {
 
         } else if (intent.getBooleanExtra(RESUME_PLAYBACK, false)
                 && DependentPreferenceHelper.getResumePlaybackEnabled(context)
-                && !samePlayQueue
+                // !samePlayQueue
+                && (playQueue == null || !playQueue.equalStreamsAndIndex(newQueue))
                 && !newQueue.isEmpty()
                 && newQueue.getItem() != null
                 && newQueue.getItem().getRecoveryPosition() == PlayQueueItem.RECOVERY_UNSET) {
@@ -435,30 +525,30 @@ public final class Player implements PlaybackListener, Listener {
                                     newQueue.setRecovery(newQueue.getIndex(),
                                             state.getProgressMillis());
                                 }
-                                initPlayback(newQueue, repeatMode, playbackSpeed, playbackPitch,
-                                        playbackSkipSilence, playWhenReady, isMuted);
+                                initPlayback(newQueue, playWhenReady);
                             },
                             error -> {
                                 if (DEBUG) {
                                     Log.w(TAG, "Failed to start playback", error);
                                 }
                                 // In case any error we can start playback without history
-                                initPlayback(newQueue, repeatMode, playbackSpeed, playbackPitch,
-                                        playbackSkipSilence, playWhenReady, isMuted);
+                                initPlayback(newQueue, playWhenReady);
                             },
                             () -> {
                                 // Completed but not found in history
-                                initPlayback(newQueue, repeatMode, playbackSpeed, playbackPitch,
-                                        playbackSkipSilence, playWhenReady, isMuted);
+                                initPlayback(newQueue, playWhenReady);
                             }
                     ));
         } else {
             // Good to go...
             // In a case of equal PlayQueues we can re-init old one but only when it is disposed
-            initPlayback(samePlayQueue ? playQueue : newQueue, repeatMode, playbackSpeed,
-                    playbackPitch, playbackSkipSilence, playWhenReady, isMuted);
+            initPlayback(samePlayQueue ? playQueue : newQueue, playWhenReady);
         }
 
+    }
+
+
+    public void handleIntentPost(final PlayerType oldPlayerType) {
         if (oldPlayerType != playerType && playQueue != null) {
             // If playerType changes from one to another we should reload the player
             // (to disable/enable video stream or to set quality)
@@ -469,6 +559,19 @@ public final class Player implements PlaybackListener, Listener {
         NavigationHelper.sendPlayerStartedEvent(context);
     }
 
+    @Nullable
+    private static PlayQueue getPlayQueueFromCache(@NonNull final Intent intent) {
+        final String queueCache = intent.getStringExtra(PLAY_QUEUE_KEY);
+        if (queueCache == null) {
+            return null;
+        }
+        final PlayQueue newQueue = SerializedCache.getInstance().take(queueCache, PlayQueue.class);
+        if (newQueue == null) {
+            return null;
+        }
+        return newQueue;
+    }
+
     private void initUIsForCurrentPlayerType() {
         if ((UIs.get(MainPlayerUi.class).isPresent() && playerType == PlayerType.MAIN)
                 || (UIs.get(PopupPlayerUi.class).isPresent() && playerType == PlayerType.POPUP)) {
@@ -502,16 +605,13 @@ public final class Player implements PlaybackListener, Listener {
     }
 
     private void initPlayback(@NonNull final PlayQueue queue,
-                              @RepeatMode final int repeatMode,
-                              final float playbackSpeed,
-                              final float playbackPitch,
-                              final boolean playbackSkipSilence,
-                              final boolean playOnReady,
-                              final boolean isMuted) {
+                              final boolean playOnReady) {
         destroyPlayer();
         initPlayer(playOnReady);
-        setRepeatMode(repeatMode);
-        setPlaybackParameters(playbackSpeed, playbackPitch, playbackSkipSilence);
+        final boolean playbackSkipSilence = getPrefs().getBoolean(getContext().getString(
+                R.string.playback_skip_silence_key), getPlaybackSkipSilence());
+        final PlaybackParameters savedParameters = retrievePlaybackParametersFromPrefs(this);
+        setPlaybackParameters(savedParameters.speed, savedParameters.pitch, playbackSkipSilence);
 
         playQueue = queue;
         playQueue.init();
@@ -519,7 +619,7 @@ public final class Player implements PlaybackListener, Listener {
 
         UIs.call(PlayerUi::initPlayback);
 
-        simpleExoPlayer.setVolume(isMuted ? 0 : 1);
+        simpleExoPlayer.setVolume(isMuted() ? 0 : 1);
         notifyQueueUpdateToListeners();
     }
 
@@ -601,6 +701,7 @@ public final class Player implements PlaybackListener, Listener {
 
         databaseUpdateDisposable.clear();
         progressUpdateDisposable.set(null);
+        streamItemDisposable.clear();
         cancelLoadingCurrentThumbnail();
 
         UIs.destroyAll(Object.class); // destroy every UI: obviously every UI extends Object
@@ -646,7 +747,7 @@ public final class Player implements PlaybackListener, Listener {
             Log.d(TAG, "onPlaybackShutdown() called");
         }
         // destroys the service, which in turn will destroy the player
-        service.stopService();
+        service.destroyPlayerAndStopService();
     }
 
     public void smoothStopForImmediateReusing() {
@@ -718,7 +819,7 @@ public final class Player implements PlaybackListener, Listener {
                 pause();
                 break;
             case ACTION_CLOSE:
-                service.stopService();
+                service.destroyPlayerAndStopService();
                 break;
             case ACTION_PLAY_PAUSE:
                 playPause();
@@ -742,7 +843,6 @@ public final class Player implements PlaybackListener, Listener {
                 toggleShuffleModeEnabled();
                 break;
             case Intent.ACTION_CONFIGURATION_CHANGED:
-                assureCorrectAppLanguage(service);
                 if (DEBUG) {
                     Log.d(TAG, "ACTION_CONFIGURATION_CHANGED received");
                 }
@@ -755,7 +855,8 @@ public final class Player implements PlaybackListener, Listener {
     private void registerBroadcastReceiver() {
         // Try to unregister current first
         unregisterBroadcastReceiver();
-        context.registerReceiver(broadcastReceiver, intentFilter);
+        ContextCompat.registerReceiver(context, broadcastReceiver, intentFilter,
+                ContextCompat.RECEIVER_EXPORTED);
     }
 
     private void unregisterBroadcastReceiver() {
@@ -1167,16 +1268,25 @@ public final class Player implements PlaybackListener, Listener {
         return exoPlayerIsNull() ? REPEAT_MODE_OFF : simpleExoPlayer.getRepeatMode();
     }
 
-    public void setRepeatMode(@RepeatMode final int repeatMode) {
+    public void cycleNextRepeatMode() {
         if (!exoPlayerIsNull()) {
+            @RepeatMode final int repeatMode;
+            switch (simpleExoPlayer.getRepeatMode()) {
+                case REPEAT_MODE_OFF:
+                    repeatMode = REPEAT_MODE_ONE;
+                    break;
+                case REPEAT_MODE_ONE:
+                    repeatMode = REPEAT_MODE_ALL;
+                    break;
+                case REPEAT_MODE_ALL:
+                default:
+                    repeatMode = REPEAT_MODE_OFF;
+                    break;
+            }
             simpleExoPlayer.setRepeatMode(repeatMode);
         }
     }
 
-    public void cycleNextRepeatMode() {
-        setRepeatMode(nextRepeatMode(getRepeatMode()));
-    }
-
     @Override
     public void onRepeatModeChanged(@RepeatMode final int repeatMode) {
         if (DEBUG) {
@@ -1279,7 +1389,8 @@ public final class Player implements PlaybackListener, Listener {
                         UserAction.PLAY_STREAM,
                         "Loading failed for [" + currentMetadata.getTitle()
                                 + "]: " + currentMetadata.getStreamUrl(),
-                        currentMetadata.getServiceId());
+                        currentMetadata.getServiceId(),
+                        currentMetadata.getStreamUrl());
                 ErrorUtil.createNotification(context, errorInfo);
             }
 
@@ -1375,6 +1486,19 @@ public final class Player implements PlaybackListener, Listener {
     public void onCues(@NonNull final CueGroup cueGroup) {
         UIs.call(playerUi -> playerUi.onCues(cueGroup.cues));
     }
+
+    /**
+     * To be called when the {@code PlaybackPreparer} set in the {@link MediaSessionConnector}
+     * receives an {@code onPrepare()} call. This function allows restoring the default behavior
+     * that would happen if there was no playback preparer set, i.e. to just call
+     * {@code player.prepare()}. You can find the default behavior in `onPlay()` inside the
+     * {@link MediaSessionConnector} file.
+     */
+    public void onPrepare() {
+        if (!exoPlayerIsNull()) {
+            simpleExoPlayer.prepare();
+        }
+    }
     //endregion
 
 
@@ -1482,7 +1606,7 @@ public final class Player implements PlaybackListener, Listener {
             errorInfo = new ErrorInfo(error, UserAction.PLAY_STREAM,
                     "Player error[type=" + error.getErrorCodeName()
                             + "] occurred while playing " + currentMetadata.getStreamUrl(),
-                    currentMetadata.getServiceId());
+                    currentMetadata.getServiceId(), currentMetadata.getStreamUrl());
         }
         ErrorUtil.createNotification(context, errorInfo);
     }

app/src/main/java/org/schabi/newpipe/player/PlayerIntentType.kt

@@ -0,0 +1,24 @@
+package org.schabi.newpipe.player
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+// We model this as an enum class plus one struct for each enum value
+// so we can consume it from Java properly. After converting to Kotlin,
+// we could switch to a sealed enum class & a proper Kotlin `when` match.
+enum class PlayerIntentType {
+    Enqueue,
+    EnqueueNext,
+    TimestampChange,
+    AllOthers
+}
+
+/**
+ * A timestamp on the given was clicked and we should switch the playing stream to it.
+ */
+@Parcelize
+data class TimestampChangeData(
+    val serviceId: Int,
+    val url: String,
+    val seconds: Int
+) : Parcelable

app/src/main/java/org/schabi/newpipe/player/PlayerService.java

@@ -19,96 +19,162 @@
 
 package org.schabi.newpipe.player;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
-import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Binder;
+import android.os.Bundle;
 import android.os.IBinder;
+import android.support.v4.media.MediaBrowserCompat;
+import android.support.v4.media.session.MediaSessionCompat;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.app.ServiceCompat;
+import androidx.media.MediaBrowserServiceCompat;
+
+import com.google.android.exoplayer2.ext.mediasession.MediaSessionConnector;
+
+import org.schabi.newpipe.ktx.BundleKt;
+import org.schabi.newpipe.player.mediabrowser.MediaBrowserImpl;
+import org.schabi.newpipe.player.mediabrowser.MediaBrowserPlaybackPreparer;
 import org.schabi.newpipe.player.mediasession.MediaSessionPlayerUi;
 import org.schabi.newpipe.player.notification.NotificationPlayerUi;
+import org.schabi.newpipe.player.notification.NotificationUtil;
 import org.schabi.newpipe.util.ThemeHelper;
 
 import java.lang.ref.WeakReference;
+import java.util.List;
+import java.util.function.Consumer;
 
 
 /**
  * One service for all players.
  */
-public final class PlayerService extends Service {
+public final class PlayerService extends MediaBrowserServiceCompat {
     private static final String TAG = PlayerService.class.getSimpleName();
     private static final boolean DEBUG = Player.DEBUG;
 
+    public static final String SHOULD_START_FOREGROUND_EXTRA = "should_start_foreground_extra";
+    public static final String BIND_PLAYER_HOLDER_ACTION = "bind_player_holder_action";
+
+    // These objects are used to cleanly separate the Service implementation (in this file) and the
+    // media browser and playback preparer implementations. At the moment the playback preparer is
+    // only used in conjunction with the media browser.
+    private MediaBrowserImpl mediaBrowserImpl;
+    private MediaBrowserPlaybackPreparer mediaBrowserPlaybackPreparer;
+
+    // these are instantiated in onCreate() as per
+    // https://developer.android.com/training/cars/media#browser_workflow
+    private MediaSessionCompat mediaSession;
+    private MediaSessionConnector sessionConnector;
+
+    @Nullable
     private Player player;
 
     private final IBinder mBinder = new PlayerService.LocalBinder(this);
 
+    /**
+     * The parameter taken by this {@link Consumer} can be null to indicate the player is being
+     * stopped.
+     */
+    @Nullable
+    private Consumer<Player> onPlayerStartedOrStopped = null;
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Service's LifeCycle
-    //////////////////////////////////////////////////////////////////////////*/
 
+    //region Service lifecycle
     @Override
     public void onCreate() {
+        super.onCreate();
+
         if (DEBUG) {
             Log.d(TAG, "onCreate() called");
         }
-        assureCorrectAppLanguage(this);
         ThemeHelper.setTheme(this);
 
-        player = new Player(this);
-        /*
-        Create the player notification and start immediately the service in foreground,
-        otherwise if nothing is played or initializing the player and its components (especially
-        loading stream metadata) takes a lot of time, the app would crash on Android 8+ as the
-        service would never be put in the foreground while we said to the system we would do so
-         */
-        player.UIs().get(NotificationPlayerUi.class)
-                .ifPresent(NotificationPlayerUi::createNotificationAndStartForeground);
+        mediaBrowserImpl = new MediaBrowserImpl(this, this::notifyChildrenChanged);
+
+        // see https://developer.android.com/training/cars/media#browser_workflow
+        mediaSession = new MediaSessionCompat(this, "MediaSessionPlayerServ");
+        setSessionToken(mediaSession.getSessionToken());
+        sessionConnector = new MediaSessionConnector(mediaSession);
+        sessionConnector.setMetadataDeduplicationEnabled(true);
+
+        mediaBrowserPlaybackPreparer = new MediaBrowserPlaybackPreparer(
+                this,
+                sessionConnector::setCustomErrorMessage,
+                () -> sessionConnector.setCustomErrorMessage(null),
+                (playWhenReady) -> {
+                    if (player != null) {
+                        player.onPrepare();
+                    }
+                }
+        );
+        sessionConnector.setPlaybackPreparer(mediaBrowserPlaybackPreparer);
+
+        // Note: you might be tempted to create the player instance and call startForeground here,
+        // but be aware that the Android system might start the service just to perform media
+        // queries. In those cases creating a player instance is a waste of resources, and calling
+        // startForeground means creating a useless empty notification. In case it's really needed
+        // the player instance can be created here, but startForeground() should definitely not be
+        // called here unless the service is actually starting in the foreground, to avoid the
+        // useless notification.
     }
 
     @Override
     public int onStartCommand(final Intent intent, final int flags, final int startId) {
         if (DEBUG) {
             Log.d(TAG, "onStartCommand() called with: intent = [" + intent
+                    + "], extras = [" + BundleKt.toDebugString(intent.getExtras())
                     + "], flags = [" + flags + "], startId = [" + startId + "]");
         }
 
-        /*
-        Be sure that the player notification is set and the service is started in foreground,
-        otherwise, the app may crash on Android 8+ as the service would never be put in the
-        foreground while we said to the system we would do so
-        The service is always requested to be started in foreground, so always creating a
-        notification if there is no one already and starting the service in foreground should
-        not create any issues
-        If the service is already started in foreground, requesting it to be started shouldn't
-        do anything
-         */
-        if (player != null) {
+        // All internal NewPipe intents used to interact with the player, that are sent to the
+        // PlayerService using startForegroundService(), will have SHOULD_START_FOREGROUND_EXTRA,
+        // to ensure startForeground() is called (otherwise Android will force-crash the app).
+        if (intent.getBooleanExtra(SHOULD_START_FOREGROUND_EXTRA, false)) {
+            final boolean playerWasNull = (player == null);
+            if (playerWasNull) {
+                // make sure the player exists, in case the service was resumed
+                player = new Player(this, mediaSession, sessionConnector);
+            }
+
+            // Be sure that the player notification is set and the service is started in foreground,
+            // otherwise, the app may crash on Android 8+ as the service would never be put in the
+            // foreground while we said to the system we would do so. The service is always
+            // requested to be started in foreground, so always creating a notification if there is
+            // no one already and starting the service in foreground should not create any issues.
+            // If the service is already started in foreground, requesting it to be started
+            // shouldn't do anything.
             player.UIs().get(NotificationPlayerUi.class)
                     .ifPresent(NotificationPlayerUi::createNotificationAndStartForeground);
+
+            if (playerWasNull && onPlayerStartedOrStopped != null) {
+                // notify that a new player was created (but do it after creating the foreground
+                // notification just to make sure we don't incur, due to slowness, in
+                // "Context.startForegroundService() did not then call Service.startForeground()")
+                onPlayerStartedOrStopped.accept(player);
+            }
         }
 
-        if (Intent.ACTION_MEDIA_BUTTON.equals(intent.getAction())
-                && (player == null || player.getPlayQueue() == null)) {
-            /*
-            No need to process media button's actions if the player is not working, otherwise
-            the player service would strangely start with nothing to play
-            Stop the service in this case, which will be removed from the foreground and its
-            notification cancelled in its destruction
-             */
-            stopSelf();
+        if (player == null) {
+            // No need to process media button's actions or other system intents if the player is
+            // not running. However, since the current intent might have been issued by the system
+            // with `startForegroundService()` (for unknown reasons), we need to ensure that we post
+            // a (dummy) foreground notification, otherwise we'd incur in
+            // "Context.startForegroundService() did not then call Service.startForeground()". Then
+            // we stop the service again.
+            Log.d(TAG, "onStartCommand() got a useless intent, closing the service");
+            NotificationUtil.startForegroundWithDummyNotification(this);
+            destroyPlayerAndStopService();
             return START_NOT_STICKY;
         }
 
-        if (player != null) {
-            player.handleIntent(intent);
-            player.UIs().get(MediaSessionPlayerUi.class)
-                    .ifPresent(ui -> ui.handleMediaButtonIntent(intent));
-        }
+        final PlayerType oldPlayerType = player.getPlayerType();
+        player.handleIntent(intent);
+        player.handleIntentPost(oldPlayerType);
+        player.UIs().get(MediaSessionPlayerUi.class)
+                .ifPresent(ui -> ui.handleMediaButtonIntent(intent));
 
         return START_NOT_STICKY;
     }
@@ -142,29 +208,84 @@ public final class PlayerService extends Service {
         if (DEBUG) {
             Log.d(TAG, "destroy() called");
         }
+        super.onDestroy();
+
         cleanup();
+
+        mediaBrowserPlaybackPreparer.dispose();
+        mediaSession.release();
+        mediaBrowserImpl.dispose();
     }
 
     private void cleanup() {
         if (player != null) {
+            if (onPlayerStartedOrStopped != null) {
+                // notify that the player is being destroyed
+                onPlayerStartedOrStopped.accept(null);
+            }
             player.destroy();
             player = null;
         }
+
+        // Should already be handled by MediaSessionPlayerUi, but just to be sure.
+        mediaSession.setActive(false);
+
+        // Should already be handled by NotificationUtil.cancelNotificationAndStopForeground() in
+        // NotificationPlayerUi, but let's make sure that the foreground service is stopped.
+        ServiceCompat.stopForeground(this, ServiceCompat.STOP_FOREGROUND_REMOVE);
     }
 
-    public void stopService() {
+    /**
+     * Destroys the player and allows the player instance to be garbage collected. Sets the media
+     * session to inactive. Stops the foreground service and removes the player notification
+     * associated with it. Tries to stop the {@link PlayerService} completely, but this step will
+     * have no effect in case some service connection still uses the service (e.g. the Android Auto
+     * system accesses the media browser even when no player is running).
+     */
+    public void destroyPlayerAndStopService() {
+        if (DEBUG) {
+            Log.d(TAG, "destroyPlayerAndStopService() called");
+        }
+
         cleanup();
-        stopSelf();
+
+        // This only really stops the service if there are no other service connections (see docs):
+        // for example the (Android Auto) media browser binder will block stopService().
+        // This is why we also stopForeground() above, to make sure the notification is removed.
+        // If we were to call stopSelf(), then the service would be surely stopped (regardless of
+        // other service connections), but this would be a waste of resources since the service
+        // would be immediately restarted by those same connections to perform the queries.
+        stopService(new Intent(this, PlayerService.class));
     }
 
     @Override
     protected void attachBaseContext(final Context base) {
         super.attachBaseContext(AudioServiceLeakFix.preventLeakOf(base));
     }
+    //endregion
 
+    //region Bind
     @Override
     public IBinder onBind(final Intent intent) {
-        return mBinder;
+        if (DEBUG) {
+            Log.d(TAG, "onBind() called with: intent = [" + intent
+                    + "], extras = [" + BundleKt.toDebugString(intent.getExtras()) + "]");
+        }
+
+        if (BIND_PLAYER_HOLDER_ACTION.equals(intent.getAction())) {
+            // Note that this binder might be reused multiple times while the service is alive, even
+            // after unbind() has been called: https://stackoverflow.com/a/8794930 .
+            return mBinder;
+
+        } else if (MediaBrowserServiceCompat.SERVICE_INTERFACE.equals(intent.getAction())) {
+            // MediaBrowserService also uses its own binder, so for actions related to the media
+            // browser service, pass the onBind to the superclass.
+            return super.onBind(intent);
+
+        } else {
+            // This is an unknown request, avoid returning any binder to not leak objects.
+            return null;
+        }
     }
 
     public static class LocalBinder extends Binder {
@@ -177,9 +298,51 @@ public final class PlayerService extends Service {
         public PlayerService getService() {
             return playerService.get();
         }
+    }
 
-        public Player getPlayer() {
-            return playerService.get().player;
+    /**
+     * @return the current active player instance. May be null, since the player service can outlive
+     * the player e.g. to respond to Android Auto media browser queries.
+     */
+    @Nullable
+    public Player getPlayer() {
+        return player;
+    }
+
+    /**
+     * Sets the listener that will be called when the player is started or stopped. If a
+     * {@code null} listener is passed, then the current listener will be unset. The parameter taken
+     * by the {@link Consumer} can be null to indicate that the player is stopping.
+     * @param listener the listener to set or unset
+     */
+    public void setPlayerListener(@Nullable final Consumer<Player> listener) {
+        this.onPlayerStartedOrStopped = listener;
+        if (listener != null) {
+            // if there is no player, then `null` will be sent here, to ensure the state is synced
+            listener.accept(player);
         }
     }
+    //endregion
+
+    //region Media browser
+    @Override
+    public BrowserRoot onGetRoot(@NonNull final String clientPackageName,
+                                 final int clientUid,
+                                 @Nullable final Bundle rootHints) {
+        return mediaBrowserImpl.onGetRoot(clientPackageName, clientUid, rootHints);
+    }
+
+    @Override
+    public void onLoadChildren(@NonNull final String parentId,
+                               @NonNull final Result<List<MediaBrowserCompat.MediaItem>> result) {
+        mediaBrowserImpl.onLoadChildren(parentId, result);
+    }
+
+    @Override
+    public void onSearch(@NonNull final String query,
+                         final Bundle extras,
+                         @NonNull final Result<List<MediaBrowserCompat.MediaItem>> result) {
+        mediaBrowserImpl.onSearch(query, result);
+    }
+    //endregion
 }

app/src/main/java/org/schabi/newpipe/player/PlayerType.java

@@ -1,32 +1,7 @@
 package org.schabi.newpipe.player;
 
-import static org.schabi.newpipe.player.Player.PLAYER_TYPE;
-
-import android.content.Intent;
-
 public enum PlayerType {
     MAIN,
     AUDIO,
     POPUP;
-
-    /**
-     * @return an integer representing this {@link PlayerType}, to be used to save it in intents
-     * @see #retrieveFromIntent(Intent) Use retrieveFromIntent() to retrieve and convert player type
-     *                                  integers from an intent
-     */
-    public int valueForIntent() {
-        return ordinal();
-    }
-
-    /**
-     * @param intent the intent to retrieve a player type from
-     * @return the player type integer retrieved from the intent, converted back into a {@link
-     *         PlayerType}, or {@link PlayerType#MAIN} if there is no player type extra in the
-     *         intent
-     * @throws ArrayIndexOutOfBoundsException if the intent contains an invalid player type integer
-     * @see #valueForIntent() Use valueForIntent() to obtain valid player type integers
-     */
-    public static PlayerType retrieveFromIntent(final Intent intent) {
-        return values()[intent.getIntExtra(PLAYER_TYPE, MAIN.valueForIntent())];
-    }
 }

app/src/main/java/org/schabi/newpipe/player/datasource/YoutubeHttpDataSource.java

@@ -14,10 +14,12 @@ import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
 import static com.google.android.exoplayer2.util.Util.castNonNull;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getAndroidUserAgent;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getIosUserAgent;
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTvHtml5UserAgent;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.isAndroidStreamingUrl;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.isIosStreamingUrl;
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.isTvHtml5StreamingUrl;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.isWebStreamingUrl;
-import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.isTvHtml5SimplyEmbeddedPlayerStreamingUrl;
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.isWebEmbeddedPlayerStreamingUrl;
 import static java.lang.Math.min;
 
 import android.net.Uri;
@@ -270,6 +272,7 @@ public final class YoutubeHttpDataSource extends BaseDataSource implements HttpD
 
     private static final String RN_PARAMETER = "&rn=";
     private static final String YOUTUBE_BASE_URL = "https://www.youtube.com";
+    private static final byte[] POST_BODY = new byte[] {0x78, 0};
 
     private final boolean allowCrossProtocolRedirects;
     private final boolean rangeParameterEnabled;
@@ -658,8 +661,11 @@ public final class YoutubeHttpDataSource extends BaseDataSource implements HttpD
             }
         }
 
+        final boolean isTvHtml5StreamingUrl = isTvHtml5StreamingUrl(requestUrl);
+
         if (isWebStreamingUrl(requestUrl)
-                || isTvHtml5SimplyEmbeddedPlayerStreamingUrl(requestUrl)) {
+                || isTvHtml5StreamingUrl
+                || isWebEmbeddedPlayerStreamingUrl(requestUrl)) {
             httpURLConnection.setRequestProperty(HttpHeaders.ORIGIN, YOUTUBE_BASE_URL);
             httpURLConnection.setRequestProperty(HttpHeaders.REFERER, YOUTUBE_BASE_URL);
             httpURLConnection.setRequestProperty(HttpHeaders.SEC_FETCH_DEST, "empty");
@@ -679,6 +685,9 @@ public final class YoutubeHttpDataSource extends BaseDataSource implements HttpD
         } else if (isIosStreamingUrl) {
             httpURLConnection.setRequestProperty(HttpHeaders.USER_AGENT,
                     getIosUserAgent(null));
+        } else if (isTvHtml5StreamingUrl) {
+            httpURLConnection.setRequestProperty(HttpHeaders.USER_AGENT,
+                    getTvHtml5UserAgent());
         } else {
             // non-mobile user agent
             httpURLConnection.setRequestProperty(HttpHeaders.USER_AGENT, DownloaderImpl.USER_AGENT);
@@ -687,22 +696,16 @@ public final class YoutubeHttpDataSource extends BaseDataSource implements HttpD
         httpURLConnection.setRequestProperty(HttpHeaders.ACCEPT_ENCODING,
                 allowGzip ? "gzip" : "identity");
         httpURLConnection.setInstanceFollowRedirects(followRedirects);
-        httpURLConnection.setDoOutput(httpBody != null);
+        // Most clients use POST requests to fetch contents
+        httpURLConnection.setRequestMethod("POST");
+        httpURLConnection.setDoOutput(true);
+        httpURLConnection.setFixedLengthStreamingMode(POST_BODY.length);
+        httpURLConnection.connect();
 
-        // Mobile clients uses POST requests to fetch contents
-        httpURLConnection.setRequestMethod(isAndroidStreamingUrl || isIosStreamingUrl
-                ? "POST"
-                : DataSpec.getStringForHttpMethod(httpMethod));
+        final OutputStream os = httpURLConnection.getOutputStream();
+        os.write(POST_BODY);
+        os.close();
 
-        if (httpBody != null) {
-            httpURLConnection.setFixedLengthStreamingMode(httpBody.length);
-            httpURLConnection.connect();
-            final OutputStream os = httpURLConnection.getOutputStream();
-            os.write(httpBody);
-            os.close();
-        } else {
-            httpURLConnection.connect();
-        }
         return httpURLConnection;
     }
 

app/src/main/java/org/schabi/newpipe/player/event/PlayerServiceExtendedEventListener.java

@@ -1,11 +1,48 @@
 package org.schabi.newpipe.player.event;
 
+import androidx.annotation.NonNull;
+
 import org.schabi.newpipe.player.PlayerService;
 import org.schabi.newpipe.player.Player;
 
+/**
+ * In addition to {@link PlayerServiceEventListener}, provides callbacks for service and player
+ * connections and disconnections. "Connected" here means that the service (resp. the
+ * player) is running and is bound to {@link org.schabi.newpipe.player.helper.PlayerHolder}.
+ * "Disconnected" means that either the service (resp. the player) was stopped completely, or that
+ * {@link org.schabi.newpipe.player.helper.PlayerHolder} is not bound.
+ */
 public interface PlayerServiceExtendedEventListener extends PlayerServiceEventListener {
-    void onServiceConnected(Player player,
-                            PlayerService playerService,
-                            boolean playAfterConnect);
+    /**
+     * The player service just connected to {@link org.schabi.newpipe.player.helper.PlayerHolder},
+     * but the player may not be active at this moment, e.g. in case the service is running to
+     * respond to Android Auto media browser queries without playing anything.
+     * {@link #onPlayerConnected(Player, boolean)} will be called right after this function if there
+     * is a player.
+     *
+     * @param playerService the newly connected player service
+     */
+    void onServiceConnected(@NonNull PlayerService playerService);
+
+    /**
+     * The player service is already connected and the player was just started.
+     *
+     * @param player the newly connected or started player
+     * @param playAfterConnect whether to open the video player in the video details fragment
+     */
+    void onPlayerConnected(@NonNull Player player, boolean playAfterConnect);
+
+    /**
+     * The player got disconnected, for one of these reasons: the player is getting closed while
+     * leaving the service open for future media browser queries, the service is stopping
+     * completely, or {@link org.schabi.newpipe.player.helper.PlayerHolder} is unbinding.
+     */
+    void onPlayerDisconnected();
+
+    /**
+     * The service got disconnected from {@link org.schabi.newpipe.player.helper.PlayerHolder},
+     * either because {@link org.schabi.newpipe.player.helper.PlayerHolder} is unbinding or because
+     * the service is stopping completely.
+     */
     void onServiceDisconnected();
 }

app/src/main/java/org/schabi/newpipe/player/helper/AudioReactor.java

@@ -154,9 +154,6 @@ public class AudioReactor implements AudioManager.OnAudioFocusChangeListener, An
         notifyAudioSessionUpdate(true, audioSessionId);
     }
     private void notifyAudioSessionUpdate(final boolean active, final int audioSessionId) {
-        if (!PlayerHelper.isUsingDSP()) {
-            return;
-        }
         final Intent intent = new Intent(active
                 ? AudioEffect.ACTION_OPEN_AUDIO_EFFECT_CONTROL_SESSION
                 : AudioEffect.ACTION_CLOSE_AUDIO_EFFECT_CONTROL_SESSION);

app/src/main/java/org/schabi/newpipe/player/helper/PlaybackParameterDialog.java

@@ -2,7 +2,6 @@ package org.schabi.newpipe.player.helper;
 
 import static org.schabi.newpipe.ktx.ViewUtils.animateRotation;
 import static org.schabi.newpipe.player.Player.DEBUG;
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 import static org.schabi.newpipe.util.ThemeHelper.resolveDrawable;
 
 import android.app.Dialog;
@@ -145,7 +144,6 @@ public class PlaybackParameterDialog extends DialogFragment {
     @NonNull
     @Override
     public Dialog onCreateDialog(@Nullable final Bundle savedInstanceState) {
-        assureCorrectAppLanguage(getContext());
         Bridge.restoreInstanceState(this, savedInstanceState);
 
         binding = DialogPlaybackParameterBinding.inflate(getLayoutInflater());

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHelper.java

@@ -1,8 +1,5 @@
 package org.schabi.newpipe.player.helper;
 
-import static com.google.android.exoplayer2.Player.REPEAT_MODE_ALL;
-import static com.google.android.exoplayer2.Player.REPEAT_MODE_OFF;
-import static com.google.android.exoplayer2.Player.REPEAT_MODE_ONE;
 import static org.schabi.newpipe.player.helper.PlayerHelper.AutoplayType.AUTOPLAY_TYPE_ALWAYS;
 import static org.schabi.newpipe.player.helper.PlayerHelper.AutoplayType.AUTOPLAY_TYPE_NEVER;
 import static org.schabi.newpipe.player.helper.PlayerHelper.AutoplayType.AUTOPLAY_TYPE_WIFI;
@@ -25,7 +22,6 @@ import androidx.core.content.ContextCompat;
 import androidx.preference.PreferenceManager;
 
 import com.google.android.exoplayer2.PlaybackParameters;
-import com.google.android.exoplayer2.Player.RepeatMode;
 import com.google.android.exoplayer2.SeekParameters;
 import com.google.android.exoplayer2.source.ProgressiveMediaSource;
 import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
@@ -33,11 +29,9 @@ import com.google.android.exoplayer2.trackselection.ExoTrackSelection;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout.ResizeMode;
 import com.google.android.exoplayer2.ui.CaptionStyleCompat;
-import com.google.android.exoplayer2.util.MimeTypes;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 import org.schabi.newpipe.extractor.stream.SubtitlesStream;
@@ -47,13 +41,14 @@ import org.schabi.newpipe.player.playqueue.PlayQueue;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 import org.schabi.newpipe.player.playqueue.SinglePlayQueue;
 import org.schabi.newpipe.util.ListHelper;
+import org.schabi.newpipe.util.Localization;
 
 import java.lang.annotation.Retention;
 import java.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
 import java.text.NumberFormat;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Formatter;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
@@ -62,11 +57,7 @@ import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 public final class PlayerHelper {
-    private static final StringBuilder STRING_BUILDER = new StringBuilder();
-    private static final Formatter STRING_FORMATTER =
-            new Formatter(STRING_BUILDER, Locale.getDefault());
-    private static final NumberFormat SPEED_FORMATTER = new DecimalFormat("0.##x");
-    private static final NumberFormat PITCH_FORMATTER = new DecimalFormat("##%");
+    private static final FormattersProvider FORMATTERS_PROVIDER = new FormattersProvider();
 
     @Retention(SOURCE)
     @IntDef({AUTOPLAY_TYPE_ALWAYS, AUTOPLAY_TYPE_WIFI,
@@ -89,9 +80,11 @@ public final class PlayerHelper {
     private PlayerHelper() {
     }
 
-    ////////////////////////////////////////////////////////////////////////////
-    // Exposed helpers
-    ////////////////////////////////////////////////////////////////////////////
+    // region Exposed helpers
+
+    public static void resetFormat() {
+        FORMATTERS_PROVIDER.reset();
+    }
 
     @NonNull
     public static String getTimeString(final int milliSeconds) {
@@ -100,35 +93,24 @@ public final class PlayerHelper {
         final int hours = (milliSeconds % 86400000) / 3600000;
         final int days = (milliSeconds % (86400000 * 7)) / 86400000;
 
-        STRING_BUILDER.setLength(0);
-        return (days > 0
-                ? STRING_FORMATTER.format("%d:%02d:%02d:%02d", days, hours, minutes, seconds)
-                : hours > 0
-                ? STRING_FORMATTER.format("%d:%02d:%02d", hours, minutes, seconds)
-                : STRING_FORMATTER.format("%02d:%02d", minutes, seconds)
-        ).toString();
+        final Formatters formatters = FORMATTERS_PROVIDER.formatters();
+        if (days > 0) {
+            return formatters.stringFormat("%d:%02d:%02d:%02d", days, hours, minutes, seconds);
+        }
+
+        return hours > 0
+            ? formatters.stringFormat("%d:%02d:%02d", hours, minutes, seconds)
+            : formatters.stringFormat("%02d:%02d", minutes, seconds);
     }
 
     @NonNull
     public static String formatSpeed(final double speed) {
-        return SPEED_FORMATTER.format(speed);
+        return FORMATTERS_PROVIDER.formatters().speed().format(speed);
     }
 
     @NonNull
     public static String formatPitch(final double pitch) {
-        return PITCH_FORMATTER.format(pitch);
-    }
-
-    @NonNull
-    public static String subtitleMimeTypesOf(@NonNull final MediaFormat format) {
-        switch (format) {
-            case VTT:
-                return MimeTypes.TEXT_VTT;
-            case TTML:
-                return MimeTypes.APPLICATION_TTML;
-            default:
-                throw new IllegalArgumentException("Unrecognized mime type: " + format.name());
-        }
+        return FORMATTERS_PROVIDER.formatters().pitch().format(pitch);
     }
 
     @NonNull
@@ -219,9 +201,8 @@ public final class PlayerHelper {
                 ? null : getAutoQueuedSinglePlayQueue(autoQueueItems.get(0));
     }
 
-    ////////////////////////////////////////////////////////////////////////////
-    // Settings Resolution
-    ////////////////////////////////////////////////////////////////////////////
+    // endregion
+    // region Resolution
 
     public static boolean isResumeAfterAudioFocusGain(@NonNull final Context context) {
         return getPreferences(context)
@@ -315,10 +296,6 @@ public final class PlayerHelper {
                 AdaptiveTrackSelection.DEFAULT_BANDWIDTH_FRACTION);
     }
 
-    public static boolean isUsingDSP() {
-        return true;
-    }
-
     @NonNull
     public static CaptionStyleCompat getCaptionStyle(@NonNull final Context context) {
         final CaptioningManager captioningManager = ContextCompat.getSystemService(context,
@@ -405,9 +382,8 @@ public final class PlayerHelper {
         return Integer.parseInt(preferredIntervalBytes) * 1024;
     }
 
-    ////////////////////////////////////////////////////////////////////////////
-    // Private helpers
-    ////////////////////////////////////////////////////////////////////////////
+    // endregion
+    // region Private helpers
 
     @NonNull
     private static SharedPreferences getPreferences(@NonNull final Context context) {
@@ -426,23 +402,8 @@ public final class PlayerHelper {
         return singlePlayQueue;
     }
 
-
-    ////////////////////////////////////////////////////////////////////////////
-    // Utils used by player
-    ////////////////////////////////////////////////////////////////////////////
-
-    @RepeatMode
-    public static int nextRepeatMode(@RepeatMode final int repeatMode) {
-        switch (repeatMode) {
-            case REPEAT_MODE_OFF:
-                return REPEAT_MODE_ONE;
-            case REPEAT_MODE_ONE:
-                return REPEAT_MODE_ALL;
-            case REPEAT_MODE_ALL:
-            default:
-                return REPEAT_MODE_OFF;
-        }
-    }
+    // endregion
+    // region Utils used by player
 
     @ResizeMode
     public static int retrieveResizeModeFromPrefs(final Player player) {
@@ -503,4 +464,43 @@ public final class PlayerHelper {
                 player.getContext().getString(R.string.seek_duration_key),
                 player.getContext().getString(R.string.seek_duration_default_value))));
     }
+
+    // endregion
+    // region Format
+
+    static class FormattersProvider {
+        private Formatters formatters;
+
+        public Formatters formatters() {
+            if (formatters == null) {
+                formatters = Formatters.create();
+            }
+            return formatters;
+        }
+
+        public void reset() {
+            formatters = null;
+        }
+    }
+
+    record Formatters(
+        Locale locale,
+        NumberFormat speed,
+        NumberFormat pitch) {
+
+        static Formatters create() {
+            final Locale locale = Localization.getAppLocale();
+            final DecimalFormatSymbols dfs = DecimalFormatSymbols.getInstance(locale);
+            return new Formatters(
+                locale,
+                new DecimalFormat("0.##x", dfs),
+                new DecimalFormat("##%", dfs));
+        }
+
+        String stringFormat(final String format, final Object... args) {
+            return String.format(locale, format, args);
+        }
+    }
+
+    // endregion
 }

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHolder.java

@@ -22,6 +22,10 @@ import org.schabi.newpipe.player.PlayerType;
 import org.schabi.newpipe.player.event.PlayerServiceEventListener;
 import org.schabi.newpipe.player.event.PlayerServiceExtendedEventListener;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
+import org.schabi.newpipe.util.NavigationHelper;
+
+import java.util.Optional;
+import java.util.function.Consumer;
 
 public final class PlayerHolder {
 
@@ -44,7 +48,16 @@ public final class PlayerHolder {
     private final PlayerServiceConnection serviceConnection = new PlayerServiceConnection();
     private boolean bound;
     @Nullable private PlayerService playerService;
-    @Nullable private Player player;
+
+    private Optional<Player> getPlayer() {
+        return Optional.ofNullable(playerService)
+                .flatMap(s -> Optional.ofNullable(s.getPlayer()));
+    }
+
+    private Optional<PlayQueue> getPlayQueue() {
+        // player play queue might be null e.g. while player is starting
+        return getPlayer().flatMap(p -> Optional.ofNullable(p.getPlayQueue()));
+    }
 
     /**
      * Returns the current {@link PlayerType} of the {@link PlayerService} service,
@@ -54,21 +67,15 @@ public final class PlayerHolder {
      */
     @Nullable
     public PlayerType getType() {
-        if (player == null) {
-            return null;
-        }
-        return player.getPlayerType();
+        return getPlayer().map(Player::getPlayerType).orElse(null);
     }
 
     public boolean isPlaying() {
-        if (player == null) {
-            return false;
-        }
-        return player.isPlaying();
+        return getPlayer().map(Player::isPlaying).orElse(false);
     }
 
     public boolean isPlayerOpen() {
-        return player != null;
+        return getPlayer().isPresent();
     }
 
     /**
@@ -77,7 +84,7 @@ public final class PlayerHolder {
      * @return true only if the player is open and its play queue is ready (i.e. it is not null)
      */
     public boolean isPlayQueueReady() {
-        return player != null && player.getPlayQueue() != null;
+        return getPlayQueue().isPresent();
     }
 
     public boolean isBound() {
@@ -85,18 +92,11 @@ public final class PlayerHolder {
     }
 
     public int getQueueSize() {
-        if (player == null || player.getPlayQueue() == null) {
-            // player play queue might be null e.g. while player is starting
-            return 0;
-        }
-        return player.getPlayQueue().size();
+        return getPlayQueue().map(PlayQueue::size).orElse(0);
     }
 
     public int getQueuePosition() {
-        if (player == null || player.getPlayQueue() == null) {
-            return 0;
-        }
-        return player.getPlayQueue().getIndex();
+        return getPlayQueue().map(PlayQueue::getIndex).orElse(0);
     }
 
     public void setListener(@Nullable final PlayerServiceExtendedEventListener newListener) {
@@ -107,9 +107,10 @@ public final class PlayerHolder {
         }
 
         // Force reload data from service
-        if (player != null) {
-            listener.onServiceConnected(player, playerService, false);
+        if (playerService != null) {
+            listener.onServiceConnected(playerService);
             startPlayerListener();
+            // ^ will call listener.onPlayerConnected() down the line if there is an active player
         }
     }
 
@@ -121,6 +122,9 @@ public final class PlayerHolder {
 
     public void startService(final boolean playAfterConnect,
                              final PlayerServiceExtendedEventListener newListener) {
+        if (DEBUG) {
+            Log.d(TAG, "startService() called with playAfterConnect=" + playAfterConnect);
+        }
         final Context context = getCommonContext();
         setListener(newListener);
         if (bound) {
@@ -130,14 +134,24 @@ public final class PlayerHolder {
         // and NullPointerExceptions inside the service because the service will be
         // bound twice. Prevent it with unbinding first
         unbind(context);
-        ContextCompat.startForegroundService(context, new Intent(context, PlayerService.class));
+        final Intent intent = new Intent(context, PlayerService.class);
+        intent.putExtra(PlayerService.SHOULD_START_FOREGROUND_EXTRA, true);
+        ContextCompat.startForegroundService(context, intent);
         serviceConnection.doPlayAfterConnect(playAfterConnect);
         bind(context);
     }
 
     public void stopService() {
+        if (DEBUG) {
+            Log.d(TAG, "stopService() called");
+        }
+        if (playerService != null) {
+            playerService.destroyPlayerAndStopService();
+        }
         final Context context = getCommonContext();
         unbind(context);
+        // destroyPlayerAndStopService() already runs the next line of code, but run it again just
+        // to make sure to stop the service even if playerService is null by any chance.
         context.stopService(new Intent(context, PlayerService.class));
     }
 
@@ -145,6 +159,11 @@ public final class PlayerHolder {
 
         private boolean playAfterConnect = false;
 
+        /**
+         * @param playAfterConnection Sets the value of `playAfterConnect` to pass to the {@link
+         * PlayerServiceExtendedEventListener#onPlayerConnected(Player, boolean)} the next time it
+         * is called. The value of `playAfterConnect` will be reset to false after that.
+         */
         public void doPlayAfterConnect(final boolean playAfterConnection) {
             this.playAfterConnect = playAfterConnection;
         }
@@ -167,11 +186,17 @@ public final class PlayerHolder {
             final PlayerService.LocalBinder localBinder = (PlayerService.LocalBinder) service;
 
             playerService = localBinder.getService();
-            player = localBinder.getPlayer();
             if (listener != null) {
-                listener.onServiceConnected(player, playerService, playAfterConnect);
+                listener.onServiceConnected(playerService);
             }
             startPlayerListener();
+            // ^ will call listener.onPlayerConnected() down the line if there is an active player
+
+            if (playerService != null && playerService.getPlayer() != null) {
+                // notify the main activity that binding the service has completed and that there is
+                // a player, so that it can open the bottom mini-player
+                NavigationHelper.sendPlayerStartedEvent(localBinder.getService());
+            }
         }
     }
 
@@ -179,15 +204,28 @@ public final class PlayerHolder {
         if (DEBUG) {
             Log.d(TAG, "bind() called");
         }
-
-        final Intent serviceIntent = new Intent(context, PlayerService.class);
-        bound = context.bindService(serviceIntent, serviceConnection,
-                Context.BIND_AUTO_CREATE);
+        // BIND_AUTO_CREATE starts the service if it's not already running
+        bound = bind(context, Context.BIND_AUTO_CREATE);
         if (!bound) {
             context.unbindService(serviceConnection);
         }
     }
 
+    public void tryBindIfNeeded(final Context context) {
+        if (!bound) {
+            // flags=0 means the service will not be started if it does not already exist. In this
+            // case the return value is not useful, as a value of "true" does not really indicate
+            // that the service is going to be bound.
+            bind(context, 0);
+        }
+    }
+
+    private boolean bind(final Context context, final int flags) {
+        final Intent serviceIntent = new Intent(context, PlayerService.class);
+        serviceIntent.setAction(PlayerService.BIND_PLAYER_HOLDER_ACTION);
+        return context.bindService(serviceIntent, serviceConnection, flags);
+    }
+
     private void unbind(final Context context) {
         if (DEBUG) {
             Log.d(TAG, "unbind() called");
@@ -198,25 +236,32 @@ public final class PlayerHolder {
             bound = false;
             stopPlayerListener();
             playerService = null;
-            player = null;
             if (listener != null) {
+                listener.onPlayerDisconnected();
                 listener.onServiceDisconnected();
             }
         }
     }
 
     private void startPlayerListener() {
-        if (player != null) {
-            player.setFragmentListener(internalListener);
+        if (playerService != null) {
+            // setting the player listener will take care of calling relevant callbacks if the
+            // player in the service is (not) already active, also see playerStateListener below
+            playerService.setPlayerListener(playerStateListener);
         }
+        getPlayer().ifPresent(p -> p.setFragmentListener(internalListener));
     }
 
     private void stopPlayerListener() {
-        if (player != null) {
-            player.removeFragmentListener(internalListener);
+        if (playerService != null) {
+            playerService.setPlayerListener(null);
         }
+        getPlayer().ifPresent(p -> p.removeFragmentListener(internalListener));
     }
 
+    /**
+     * This listener will be held by the players created by {@link PlayerService}.
+     */
     private final PlayerServiceEventListener internalListener =
             new PlayerServiceEventListener() {
                 @Override
@@ -303,4 +348,25 @@ public final class PlayerHolder {
                     unbind(getCommonContext());
                 }
             };
+
+    /**
+     * This listener will be held by bound {@link PlayerService}s to notify of the player starting
+     * or stopping. This is necessary since the service outlives the player e.g. to answer Android
+     * Auto media browser queries.
+     */
+    private final Consumer<Player> playerStateListener = (@Nullable final Player player) -> {
+        if (listener != null) {
+            if (player == null) {
+                // player.fragmentListener=null is already done by player.stopActivityBinding(),
+                // which is called by player.destroy(), which is in turn called by PlayerService
+                // before setting its player to null
+                listener.onPlayerDisconnected();
+            } else {
+                listener.onPlayerConnected(player, serviceConnection.playAfterConnect);
+                // reset the value of playAfterConnect: if it was true before, it is now "consumed"
+                serviceConnection.playAfterConnect = false;
+                player.setFragmentListener(internalListener);
+            }
+        }
+    };
 }

app/src/main/java/org/schabi/newpipe/player/mediabrowser/MediaBrowserCommon.kt

@@ -0,0 +1,40 @@
+package org.schabi.newpipe.player.mediabrowser
+
+import org.schabi.newpipe.BuildConfig
+import org.schabi.newpipe.extractor.InfoItem.InfoType
+import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException
+
+internal const val ID_AUTHORITY = BuildConfig.APPLICATION_ID
+internal const val ID_ROOT = "//$ID_AUTHORITY"
+internal const val ID_BOOKMARKS = "playlists"
+internal const val ID_HISTORY = "history"
+internal const val ID_INFO_ITEM = "item"
+
+internal const val ID_LOCAL = "local"
+internal const val ID_REMOTE = "remote"
+internal const val ID_URL = "url"
+internal const val ID_STREAM = "stream"
+internal const val ID_PLAYLIST = "playlist"
+internal const val ID_CHANNEL = "channel"
+
+internal fun infoItemTypeToString(type: InfoType): String {
+    return when (type) {
+        InfoType.STREAM -> ID_STREAM
+        InfoType.PLAYLIST -> ID_PLAYLIST
+        InfoType.CHANNEL -> ID_CHANNEL
+        else -> throw IllegalStateException("Unexpected value: $type")
+    }
+}
+
+internal fun infoItemTypeFromString(type: String): InfoType {
+    return when (type) {
+        ID_STREAM -> InfoType.STREAM
+        ID_PLAYLIST -> InfoType.PLAYLIST
+        ID_CHANNEL -> InfoType.CHANNEL
+        else -> throw IllegalStateException("Unexpected value: $type")
+    }
+}
+
+internal fun parseError(mediaId: String): ContentNotAvailableException {
+    return ContentNotAvailableException("Failed to parse media ID $mediaId")
+}

app/src/main/java/org/schabi/newpipe/player/mediabrowser/MediaBrowserImpl.kt

@@ -0,0 +1,421 @@
+package org.schabi.newpipe.player.mediabrowser
+
+import android.content.ContentResolver
+import android.content.Context
+import android.net.Uri
+import android.os.Bundle
+import android.support.v4.media.MediaBrowserCompat
+import android.support.v4.media.MediaDescriptionCompat
+import android.util.Log
+import androidx.annotation.DrawableRes
+import androidx.core.net.toUri
+import androidx.media.MediaBrowserServiceCompat
+import androidx.media.MediaBrowserServiceCompat.BrowserRoot.EXTRA_RECENT
+import androidx.media.MediaBrowserServiceCompat.Result
+import androidx.media.utils.MediaConstants
+import io.reactivex.rxjava3.core.Flowable
+import io.reactivex.rxjava3.core.Single
+import io.reactivex.rxjava3.disposables.CompositeDisposable
+import io.reactivex.rxjava3.schedulers.Schedulers
+import org.schabi.newpipe.MainActivity.DEBUG
+import org.schabi.newpipe.NewPipeDatabase
+import org.schabi.newpipe.R
+import org.schabi.newpipe.database.history.model.StreamHistoryEntry
+import org.schabi.newpipe.database.playlist.PlaylistLocalItem
+import org.schabi.newpipe.database.playlist.PlaylistStreamEntry
+import org.schabi.newpipe.database.playlist.model.PlaylistRemoteEntity
+import org.schabi.newpipe.extractor.InfoItem
+import org.schabi.newpipe.extractor.InfoItem.InfoType
+import org.schabi.newpipe.extractor.channel.ChannelInfoItem
+import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException
+import org.schabi.newpipe.extractor.playlist.PlaylistInfoItem
+import org.schabi.newpipe.extractor.search.SearchInfo
+import org.schabi.newpipe.extractor.stream.StreamInfoItem
+import org.schabi.newpipe.local.bookmark.MergedPlaylistManager
+import org.schabi.newpipe.local.playlist.LocalPlaylistManager
+import org.schabi.newpipe.local.playlist.RemotePlaylistManager
+import org.schabi.newpipe.util.ExtractorHelper
+import org.schabi.newpipe.util.ServiceHelper
+import org.schabi.newpipe.util.image.ImageStrategy
+import java.util.function.Consumer
+
+/**
+ * This class is used to cleanly separate the Service implementation (in
+ * [org.schabi.newpipe.player.PlayerService]) and the media browser implementation (in this file).
+ *
+ * @param notifyChildrenChanged takes the parent id of the children that changed
+ */
+class MediaBrowserImpl(
+    private val context: Context,
+    notifyChildrenChanged: Consumer<String>, // parentId
+) {
+    private val packageValidator = PackageValidator(context)
+    private val database = NewPipeDatabase.getInstance(context)
+    private var disposables = CompositeDisposable()
+
+    init {
+        // this will listen to changes in the bookmarks until this MediaBrowserImpl is dispose()d
+        disposables.add(
+            getMergedPlaylists().subscribe { notifyChildrenChanged.accept(ID_BOOKMARKS) }
+        )
+    }
+
+    //region Cleanup
+    fun dispose() {
+        disposables.dispose()
+    }
+    //endregion
+
+    //region onGetRoot
+    fun onGetRoot(
+        clientPackageName: String,
+        clientUid: Int,
+        rootHints: Bundle?
+    ): MediaBrowserServiceCompat.BrowserRoot? {
+        if (DEBUG) {
+            Log.d(TAG, "onGetRoot($clientPackageName, $clientUid, $rootHints)")
+        }
+
+        if (!packageValidator.isKnownCaller(clientPackageName, clientUid)) {
+            // this is a caller we can't trust (see PackageValidator's rules taken from uamp)
+            return null
+        }
+
+        if (rootHints?.getBoolean(EXTRA_RECENT, false) == true) {
+            // the system is asking for a root to do media resumption, but we can't handle that yet,
+            // see https://developer.android.com/media/implement/surfaces/mobile#mediabrowserservice_implementation
+            return null
+        }
+
+        val extras = Bundle()
+        extras.putBoolean(
+            MediaConstants.BROWSER_SERVICE_EXTRAS_KEY_SEARCH_SUPPORTED, true
+        )
+        return MediaBrowserServiceCompat.BrowserRoot(ID_ROOT, extras)
+    }
+    //endregion
+
+    //region onLoadChildren
+    fun onLoadChildren(parentId: String, result: Result<List<MediaBrowserCompat.MediaItem>>) {
+        if (DEBUG) {
+            Log.d(TAG, "onLoadChildren($parentId)")
+        }
+
+        result.detach() // allows sendResult() to happen later
+        disposables.add(
+            onLoadChildren(parentId)
+                .subscribe(
+                    { result.sendResult(it) },
+                    { throwable ->
+                        // null indicates an error, see the docs of MediaSessionCompat.onSearch()
+                        result.sendResult(null)
+                        Log.e(TAG, "onLoadChildren error for parentId=$parentId: $throwable")
+                    }
+                )
+        )
+    }
+
+    private fun onLoadChildren(parentId: String): Single<List<MediaBrowserCompat.MediaItem>> {
+        try {
+            val parentIdUri = parentId.toUri()
+            val path = ArrayList(parentIdUri.pathSegments)
+
+            if (path.isEmpty()) {
+                return Single.just(
+                    listOf(
+                        createRootMediaItem(
+                            ID_BOOKMARKS,
+                            context.resources.getString(R.string.tab_bookmarks_short),
+                            R.drawable.ic_bookmark_white
+                        ),
+                        createRootMediaItem(
+                            ID_HISTORY,
+                            context.resources.getString(R.string.action_history),
+                            R.drawable.ic_history_white
+                        )
+                    )
+                )
+            }
+
+            when (/*val uriType = */path.removeAt(0)) {
+                ID_BOOKMARKS -> {
+                    if (path.isEmpty()) {
+                        return populateBookmarks()
+                    }
+                    if (path.size == 2) {
+                        val localOrRemote = path[0]
+                        val playlistId = path[1].toLong()
+                        if (localOrRemote == ID_LOCAL) {
+                            return populateLocalPlaylist(playlistId)
+                        } else if (localOrRemote == ID_REMOTE) {
+                            return populateRemotePlaylist(playlistId)
+                        }
+                    }
+                    Log.w(TAG, "Unknown playlist URI: $parentId")
+                    throw parseError(parentId)
+                }
+
+                ID_HISTORY -> return populateHistory()
+
+                else -> throw parseError(parentId)
+            }
+        } catch (e: ContentNotAvailableException) {
+            return Single.error(e)
+        }
+    }
+
+    private fun createRootMediaItem(
+        mediaId: String?,
+        folderName: String?,
+        @DrawableRes iconResId: Int
+    ): MediaBrowserCompat.MediaItem {
+        val builder = MediaDescriptionCompat.Builder()
+        builder.setMediaId(mediaId)
+        builder.setTitle(folderName)
+        val resources = context.resources
+        builder.setIconUri(
+            Uri.Builder()
+                .scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)
+                .authority(resources.getResourcePackageName(iconResId))
+                .appendPath(resources.getResourceTypeName(iconResId))
+                .appendPath(resources.getResourceEntryName(iconResId))
+                .build()
+        )
+
+        val extras = Bundle()
+        extras.putString(
+            MediaConstants.DESCRIPTION_EXTRAS_KEY_CONTENT_STYLE_GROUP_TITLE,
+            context.getString(R.string.app_name)
+        )
+        builder.setExtras(extras)
+        return MediaBrowserCompat.MediaItem(
+            builder.build(),
+            MediaBrowserCompat.MediaItem.FLAG_BROWSABLE
+        )
+    }
+
+    private fun createPlaylistMediaItem(playlist: PlaylistLocalItem): MediaBrowserCompat.MediaItem {
+        val builder = MediaDescriptionCompat.Builder()
+        builder
+            .setMediaId(createMediaIdForInfoItem(playlist is PlaylistRemoteEntity, playlist.uid))
+            .setTitle(playlist.orderingName)
+            .setIconUri(imageUriOrNullIfDisabled(playlist.thumbnailUrl))
+
+        val extras = Bundle()
+        extras.putString(
+            MediaConstants.DESCRIPTION_EXTRAS_KEY_CONTENT_STYLE_GROUP_TITLE,
+            context.resources.getString(R.string.tab_bookmarks),
+        )
+        builder.setExtras(extras)
+        return MediaBrowserCompat.MediaItem(
+            builder.build(),
+            MediaBrowserCompat.MediaItem.FLAG_BROWSABLE,
+        )
+    }
+
+    private fun createInfoItemMediaItem(item: InfoItem): MediaBrowserCompat.MediaItem? {
+        val builder = MediaDescriptionCompat.Builder()
+        builder.setMediaId(createMediaIdForInfoItem(item))
+            .setTitle(item.name)
+
+        when (item.infoType) {
+            InfoType.STREAM -> builder.setSubtitle((item as StreamInfoItem).uploaderName)
+            InfoType.PLAYLIST -> builder.setSubtitle((item as PlaylistInfoItem).uploaderName)
+            InfoType.CHANNEL -> builder.setSubtitle((item as ChannelInfoItem).description)
+            else -> return null
+        }
+
+        ImageStrategy.choosePreferredImage(item.thumbnails)?.let {
+            builder.setIconUri(imageUriOrNullIfDisabled(it))
+        }
+
+        return MediaBrowserCompat.MediaItem(
+            builder.build(),
+            MediaBrowserCompat.MediaItem.FLAG_PLAYABLE
+        )
+    }
+
+    private fun buildMediaId(): Uri.Builder {
+        return Uri.Builder().authority(ID_AUTHORITY)
+    }
+
+    private fun buildPlaylistMediaId(playlistType: String?): Uri.Builder {
+        return buildMediaId()
+            .appendPath(ID_BOOKMARKS)
+            .appendPath(playlistType)
+    }
+
+    private fun buildLocalPlaylistItemMediaId(isRemote: Boolean, playlistId: Long): Uri.Builder {
+        return buildPlaylistMediaId(if (isRemote) ID_REMOTE else ID_LOCAL)
+            .appendPath(playlistId.toString())
+    }
+
+    private fun buildInfoItemMediaId(item: InfoItem): Uri.Builder {
+        return buildMediaId()
+            .appendPath(ID_INFO_ITEM)
+            .appendPath(infoItemTypeToString(item.infoType))
+            .appendPath(item.serviceId.toString())
+            .appendQueryParameter(ID_URL, item.url)
+    }
+
+    private fun createMediaIdForInfoItem(isRemote: Boolean, playlistId: Long): String {
+        return buildLocalPlaylistItemMediaId(isRemote, playlistId)
+            .build().toString()
+    }
+
+    private fun createLocalPlaylistStreamMediaItem(
+        playlistId: Long,
+        item: PlaylistStreamEntry,
+        index: Int,
+    ): MediaBrowserCompat.MediaItem {
+        val builder = MediaDescriptionCompat.Builder()
+        builder.setMediaId(createMediaIdForPlaylistIndex(false, playlistId, index))
+            .setTitle(item.streamEntity.title)
+            .setSubtitle(item.streamEntity.uploader)
+            .setIconUri(imageUriOrNullIfDisabled(item.streamEntity.thumbnailUrl))
+
+        return MediaBrowserCompat.MediaItem(
+            builder.build(),
+            MediaBrowserCompat.MediaItem.FLAG_PLAYABLE
+        )
+    }
+
+    private fun createRemotePlaylistStreamMediaItem(
+        playlistId: Long,
+        item: StreamInfoItem,
+        index: Int,
+    ): MediaBrowserCompat.MediaItem {
+        val builder = MediaDescriptionCompat.Builder()
+        builder.setMediaId(createMediaIdForPlaylistIndex(true, playlistId, index))
+            .setTitle(item.name)
+            .setSubtitle(item.uploaderName)
+
+        ImageStrategy.choosePreferredImage(item.thumbnails)?.let {
+            builder.setIconUri(imageUriOrNullIfDisabled(it))
+        }
+
+        return MediaBrowserCompat.MediaItem(
+            builder.build(),
+            MediaBrowserCompat.MediaItem.FLAG_PLAYABLE
+        )
+    }
+
+    private fun createMediaIdForPlaylistIndex(
+        isRemote: Boolean,
+        playlistId: Long,
+        index: Int,
+    ): String {
+        return buildLocalPlaylistItemMediaId(isRemote, playlistId)
+            .appendPath(index.toString())
+            .build().toString()
+    }
+
+    private fun createMediaIdForInfoItem(item: InfoItem): String {
+        return buildInfoItemMediaId(item).build().toString()
+    }
+
+    private fun populateHistory(): Single<List<MediaBrowserCompat.MediaItem>> {
+        val history = database.streamHistoryDAO().getHistory().firstOrError()
+        return history.map { items ->
+            items.map { this.createHistoryMediaItem(it) }
+        }
+    }
+
+    private fun createHistoryMediaItem(streamHistoryEntry: StreamHistoryEntry): MediaBrowserCompat.MediaItem {
+        val builder = MediaDescriptionCompat.Builder()
+        val mediaId = buildMediaId()
+            .appendPath(ID_HISTORY)
+            .appendPath(streamHistoryEntry.streamId.toString())
+            .build().toString()
+        builder.setMediaId(mediaId)
+            .setTitle(streamHistoryEntry.streamEntity.title)
+            .setSubtitle(streamHistoryEntry.streamEntity.uploader)
+            .setIconUri(imageUriOrNullIfDisabled(streamHistoryEntry.streamEntity.thumbnailUrl))
+
+        return MediaBrowserCompat.MediaItem(
+            builder.build(),
+            MediaBrowserCompat.MediaItem.FLAG_PLAYABLE
+        )
+    }
+
+    private fun getMergedPlaylists(): Flowable<MutableList<PlaylistLocalItem>> {
+        return MergedPlaylistManager.getMergedOrderedPlaylists(
+            LocalPlaylistManager(database),
+            RemotePlaylistManager(database)
+        )
+    }
+
+    private fun populateBookmarks(): Single<List<MediaBrowserCompat.MediaItem>> {
+        val playlists = getMergedPlaylists().firstOrError()
+        return playlists.map { playlist ->
+            playlist.map { this.createPlaylistMediaItem(it) }
+        }
+    }
+
+    private fun populateLocalPlaylist(playlistId: Long): Single<List<MediaBrowserCompat.MediaItem>> {
+        val playlist = LocalPlaylistManager(database).getPlaylistStreams(playlistId).firstOrError()
+        return playlist.map { items ->
+            items.mapIndexed { index, item ->
+                createLocalPlaylistStreamMediaItem(playlistId, item, index)
+            }
+        }
+    }
+
+    private fun populateRemotePlaylist(playlistId: Long): Single<List<MediaBrowserCompat.MediaItem>> {
+        return RemotePlaylistManager(database).getPlaylist(playlistId).firstOrError()
+            .flatMap { ExtractorHelper.getPlaylistInfo(it.serviceId, it.url, false) }
+            .map {
+                // ignore it.errors, i.e. ignore errors about specific items, since there would
+                // be no way to show the error properly in Android Auto anyway
+                it.relatedItems.mapIndexed { index, item ->
+                    createRemotePlaylistStreamMediaItem(playlistId, item, index)
+                }
+            }
+    }
+    //endregion
+
+    //region Search
+    fun onSearch(
+        query: String,
+        result: Result<List<MediaBrowserCompat.MediaItem>>
+    ) {
+        if (DEBUG) {
+            Log.d(TAG, "onSearch($query)")
+        }
+
+        result.detach() // allows sendResult() to happen later
+        disposables.add(
+            searchMusicBySongTitle(query)
+                // ignore it.errors, i.e. ignore errors about specific items, since there would
+                // be no way to show the error properly in Android Auto anyway
+                .map { it.relatedItems.mapNotNull(this::createInfoItemMediaItem) }
+                .subscribeOn(Schedulers.io())
+                .subscribe(
+                    { result.sendResult(it) },
+                    { throwable ->
+                        // null indicates an error, see the docs of MediaSessionCompat.onSearch()
+                        result.sendResult(null)
+                        Log.e(TAG, "Search error for query=\"$query\": $throwable")
+                    }
+                )
+        )
+    }
+
+    private fun searchMusicBySongTitle(query: String?): Single<SearchInfo> {
+        val serviceId = ServiceHelper.getSelectedServiceId(context)
+        return ExtractorHelper.searchFor(serviceId, query, listOf(), "")
+    }
+    //endregion
+
+    companion object {
+        private val TAG: String = MediaBrowserImpl::class.java.getSimpleName()
+
+        fun imageUriOrNullIfDisabled(url: String?): Uri? {
+            return if (ImageStrategy.shouldLoadImages()) {
+                url?.toUri()
+            } else {
+                null
+            }
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/player/mediabrowser/MediaBrowserPlaybackPreparer.kt

@@ -0,0 +1,262 @@
+package org.schabi.newpipe.player.mediabrowser
+
+import android.content.Context
+import android.net.Uri
+import android.os.Bundle
+import android.os.ResultReceiver
+import android.support.v4.media.session.PlaybackStateCompat
+import android.util.Log
+import androidx.core.content.ContextCompat
+import androidx.core.net.toUri
+import com.google.android.exoplayer2.Player
+import com.google.android.exoplayer2.ext.mediasession.MediaSessionConnector.PlaybackPreparer
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.core.Single
+import io.reactivex.rxjava3.disposables.Disposable
+import io.reactivex.rxjava3.schedulers.Schedulers
+import org.schabi.newpipe.MainActivity
+import org.schabi.newpipe.NewPipeDatabase
+import org.schabi.newpipe.R
+import org.schabi.newpipe.error.ErrorInfo
+import org.schabi.newpipe.extractor.InfoItem.InfoType
+import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException
+import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler
+import org.schabi.newpipe.local.playlist.LocalPlaylistManager
+import org.schabi.newpipe.local.playlist.RemotePlaylistManager
+import org.schabi.newpipe.player.playqueue.ChannelTabPlayQueue
+import org.schabi.newpipe.player.playqueue.PlayQueue
+import org.schabi.newpipe.player.playqueue.PlaylistPlayQueue
+import org.schabi.newpipe.player.playqueue.SinglePlayQueue
+import org.schabi.newpipe.util.ChannelTabHelper
+import org.schabi.newpipe.util.ExtractorHelper
+import org.schabi.newpipe.util.NavigationHelper
+import java.util.function.BiConsumer
+import java.util.function.Consumer
+
+/**
+ * This class is used to cleanly separate the Service implementation (in
+ * [org.schabi.newpipe.player.PlayerService]) and the playback preparer implementation (in this
+ * file). We currently use the playback preparer only in conjunction with the media browser: the
+ * playback preparer will receive the media URLs generated by [MediaBrowserImpl] and will start
+ * playback of the corresponding streams or playlists.
+ *
+ * @param setMediaSessionError takes an error String and an error code from [PlaybackStateCompat],
+ * calls `sessionConnector.setCustomErrorMessage(errorString, errorCode)`
+ * @param clearMediaSessionError calls `sessionConnector.setCustomErrorMessage(null)`
+ * @param onPrepare takes playWhenReady, calls `player.prepare()`; this is needed because
+ * `MediaSessionConnector`'s `onPlay()` method calls this class'  [onPrepare] instead of
+ * `player.prepare()` if the playback preparer is not null, but we want the original behavior
+ */
+class MediaBrowserPlaybackPreparer(
+    private val context: Context,
+    private val setMediaSessionError: BiConsumer<String, Int>, // error string, error code
+    private val clearMediaSessionError: Runnable,
+    private val onPrepare: Consumer<Boolean>,
+) : PlaybackPreparer {
+    private val database = NewPipeDatabase.getInstance(context)
+    private var disposable: Disposable? = null
+
+    fun dispose() {
+        disposable?.dispose()
+    }
+
+    //region Overrides
+    override fun getSupportedPrepareActions(): Long {
+        return PlaybackStateCompat.ACTION_PLAY_FROM_MEDIA_ID
+    }
+
+    override fun onPrepare(playWhenReady: Boolean) {
+        onPrepare.accept(playWhenReady)
+    }
+
+    override fun onPrepareFromMediaId(mediaId: String, playWhenReady: Boolean, extras: Bundle?) {
+        if (MainActivity.DEBUG) {
+            Log.d(TAG, "onPrepareFromMediaId($mediaId, $playWhenReady, $extras)")
+        }
+
+        disposable?.dispose()
+        disposable = extractPlayQueueFromMediaId(mediaId)
+            .subscribeOn(Schedulers.io())
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(
+                { playQueue ->
+                    clearMediaSessionError.run()
+                    NavigationHelper.playOnBackgroundPlayer(context, playQueue, playWhenReady)
+                },
+                { throwable ->
+                    Log.e(TAG, "Failed to start playback of media ID [$mediaId]", throwable)
+                    onPrepareError(throwable)
+                }
+            )
+    }
+
+    override fun onPrepareFromSearch(query: String, playWhenReady: Boolean, extras: Bundle?) {
+        onUnsupportedError()
+    }
+
+    override fun onPrepareFromUri(uri: Uri, playWhenReady: Boolean, extras: Bundle?) {
+        onUnsupportedError()
+    }
+
+    override fun onCommand(
+        player: Player,
+        command: String,
+        extras: Bundle?,
+        cb: ResultReceiver?
+    ): Boolean {
+        return false
+    }
+    //endregion
+
+    //region Errors
+    private fun onUnsupportedError() {
+        setMediaSessionError.accept(
+            ContextCompat.getString(context, R.string.content_not_supported),
+            PlaybackStateCompat.ERROR_CODE_NOT_SUPPORTED
+        )
+    }
+
+    private fun onPrepareError(throwable: Throwable) {
+        setMediaSessionError.accept(
+            ErrorInfo.getMessage(throwable, null, null).getString(context),
+            PlaybackStateCompat.ERROR_CODE_APP_ERROR
+        )
+    }
+    //endregion
+
+    //region Building play queues from playlists and history
+    private fun extractLocalPlayQueue(playlistId: Long, index: Int): Single<PlayQueue> {
+        return LocalPlaylistManager(database).getPlaylistStreams(playlistId).firstOrError()
+            .map { items -> SinglePlayQueue(items.map { it.toStreamInfoItem() }, index) }
+    }
+
+    private fun extractRemotePlayQueue(playlistId: Long, index: Int): Single<PlayQueue> {
+        return RemotePlaylistManager(database).getPlaylist(playlistId).firstOrError()
+            .flatMap { ExtractorHelper.getPlaylistInfo(it.serviceId, it.url, false) }
+            // ignore info.errors, i.e. ignore errors about specific items, since there would
+            // be no way to show the error properly in Android Auto anyway
+            .map { info -> PlaylistPlayQueue(info, index) }
+    }
+
+    private fun extractPlayQueueFromMediaId(mediaId: String): Single<PlayQueue> {
+        try {
+            val mediaIdUri = mediaId.toUri()
+            val path = ArrayList(mediaIdUri.pathSegments)
+            if (path.isEmpty()) {
+                throw parseError(mediaId)
+            }
+
+            return when (/*val uriType = */path.removeAt(0)) {
+                ID_BOOKMARKS -> extractPlayQueueFromPlaylistMediaId(
+                    mediaId,
+                    path,
+                    mediaIdUri.getQueryParameter(ID_URL)
+                )
+
+                ID_HISTORY -> extractPlayQueueFromHistoryMediaId(mediaId, path)
+
+                ID_INFO_ITEM -> extractPlayQueueFromInfoItemMediaId(
+                    mediaId,
+                    path,
+                    mediaIdUri.getQueryParameter(ID_URL) ?: throw parseError(mediaId)
+                )
+
+                else -> throw parseError(mediaId)
+            }
+        } catch (e: ContentNotAvailableException) {
+            return Single.error(e)
+        }
+    }
+
+    @Throws(ContentNotAvailableException::class)
+    private fun extractPlayQueueFromPlaylistMediaId(
+        mediaId: String,
+        path: MutableList<String>,
+        url: String?,
+    ): Single<PlayQueue> {
+        if (path.isEmpty()) {
+            throw parseError(mediaId)
+        }
+
+        when (val playlistType = path.removeAt(0)) {
+            ID_LOCAL, ID_REMOTE -> {
+                if (path.size != 2) {
+                    throw parseError(mediaId)
+                }
+                val playlistId = path[0].toLong()
+                val index = path[1].toInt()
+                return if (playlistType == ID_LOCAL)
+                    extractLocalPlayQueue(playlistId, index)
+                else
+                    extractRemotePlayQueue(playlistId, index)
+            }
+
+            ID_URL -> {
+                if (path.size != 1 || url == null) {
+                    throw parseError(mediaId)
+                }
+
+                val serviceId = path[0].toInt()
+                return ExtractorHelper.getPlaylistInfo(serviceId, url, false)
+                    .map { PlaylistPlayQueue(it) }
+            }
+
+            else -> throw parseError(mediaId)
+        }
+    }
+
+    @Throws(ContentNotAvailableException::class)
+    private fun extractPlayQueueFromHistoryMediaId(
+        mediaId: String,
+        path: List<String>,
+    ): Single<PlayQueue> {
+        if (path.size != 1) {
+            throw parseError(mediaId)
+        }
+
+        val streamId = path[0].toLong()
+        return database.streamHistoryDAO().getHistory()
+            .firstOrError()
+            .map { items ->
+                val infoItems = items
+                    .filter { it.streamId == streamId }
+                    .map { it.toStreamInfoItem() }
+                SinglePlayQueue(infoItems, 0)
+            }
+    }
+
+    @Throws(ContentNotAvailableException::class)
+    private fun extractPlayQueueFromInfoItemMediaId(
+        mediaId: String,
+        path: List<String>,
+        url: String,
+    ): Single<PlayQueue> {
+        if (path.size != 2) {
+            throw parseError(mediaId)
+        }
+
+        val serviceId = path[1].toInt()
+        return when (/*val infoItemType = */infoItemTypeFromString(path[0])) {
+            InfoType.STREAM -> ExtractorHelper.getStreamInfo(serviceId, url, false)
+                .map { SinglePlayQueue(it) }
+
+            InfoType.PLAYLIST -> ExtractorHelper.getPlaylistInfo(serviceId, url, false)
+                .map { PlaylistPlayQueue(it) }
+
+            InfoType.CHANNEL -> ExtractorHelper.getChannelInfo(serviceId, url, false)
+                .map { info ->
+                    val playableTab = info.tabs
+                        .firstOrNull { ChannelTabHelper.isStreamsTab(it) }
+                        ?: throw ContentNotAvailableException("No streams tab found")
+                    return@map ChannelTabPlayQueue(serviceId, ListLinkHandler(playableTab))
+                }
+
+            else -> throw parseError(mediaId)
+        }
+    }
+    //endregion
+
+    companion object {
+        private val TAG = MediaBrowserPlaybackPreparer::class.simpleName
+    }
+}

app/src/main/java/org/schabi/newpipe/player/mediabrowser/PackageValidator.kt

@@ -0,0 +1,240 @@
+/*
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// THIS FILE WAS TAKEN FROM UAMP, EXCEPT FOR THINGS RELATED TO THE WHITELIST. UPDATE IT WHEN NEEDED.
+// https://github.com/android/uamp/blob/329a21b63c247e9bd35f6858d4fc0e448fa38603/common/src/main/java/com/example/android/uamp/media/PackageValidator.kt
+
+package org.schabi.newpipe.player.mediabrowser
+
+import android.Manifest.permission.MEDIA_CONTENT_CONTROL
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.pm.PackageInfo
+import android.content.pm.PackageInfo.REQUESTED_PERMISSION_GRANTED
+import android.content.pm.PackageManager
+import android.os.Process
+import android.support.v4.media.session.MediaSessionCompat
+import android.util.Log
+import androidx.core.app.NotificationManagerCompat
+import androidx.media.MediaBrowserServiceCompat
+import org.schabi.newpipe.BuildConfig
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+
+/**
+ * Validates that the calling package is authorized to browse a [MediaBrowserServiceCompat].
+ *
+ * The list of allowed signing certificates and their corresponding package names is defined in
+ * res/xml/allowed_media_browser_callers.xml.
+ *
+ * If you want to add a new caller to allowed_media_browser_callers.xml and you don't know
+ * its signature, this class will print to logcat (INFO level) a message with the proper
+ * xml tags to add to allow the caller.
+ *
+ * For more information, see res/xml/allowed_media_browser_callers.xml.
+ */
+internal class PackageValidator(context: Context) {
+    private val context: Context = context.applicationContext
+    private val packageManager: PackageManager = this.context.packageManager
+    private val platformSignature: String = getSystemSignature()
+    private val callerChecked = mutableMapOf<String, Pair<Int, Boolean>>()
+
+    /**
+     * Checks whether the caller attempting to connect to a [MediaBrowserServiceCompat] is known.
+     * See [MusicService.onGetRoot] for where this is utilized.
+     *
+     * @param callingPackage The package name of the caller.
+     * @param callingUid The user id of the caller.
+     * @return `true` if the caller is known, `false` otherwise.
+     */
+    fun isKnownCaller(callingPackage: String, callingUid: Int): Boolean {
+        // If the caller has already been checked, return the previous result here.
+        val (checkedUid, checkResult) = callerChecked[callingPackage] ?: Pair(0, false)
+        if (checkedUid == callingUid) {
+            return checkResult
+        }
+
+        /**
+         * Because some of these checks can be slow, we save the results in [callerChecked] after
+         * this code is run.
+         *
+         * In particular, there's little reason to recompute the calling package's certificate
+         * signature (SHA-256) each call.
+         *
+         * This is safe to do as we know the UID matches the package's UID (from the check above),
+         * and app UIDs are set at install time. Additionally, a package name + UID is guaranteed to
+         * be constant until a reboot. (After a reboot then a previously assigned UID could be
+         * reassigned.)
+         */
+
+        // Build the caller info for the rest of the checks here.
+        val callerPackageInfo = buildCallerInfo(callingPackage)
+            ?: throw IllegalStateException("Caller wasn't found in the system?")
+
+        // Verify that things aren't ... broken. (This test should always pass.)
+        if (callerPackageInfo.uid != callingUid) {
+            throw IllegalStateException("Caller's package UID doesn't match caller's actual UID?")
+        }
+
+        val callerSignature = callerPackageInfo.signature
+
+        val isCallerKnown = when {
+            // If it's our own app making the call, allow it.
+            callingUid == Process.myUid() -> true
+            // If the system is making the call, allow it.
+            callingUid == Process.SYSTEM_UID -> true
+            // If the app was signed by the same certificate as the platform itself, also allow it.
+            callerSignature == platformSignature -> true
+            /**
+             * [MEDIA_CONTENT_CONTROL] permission is only available to system applications, and
+             * while it isn't required to allow these apps to connect to a
+             * [MediaBrowserServiceCompat], allowing this ensures optimal compatability with apps
+             * such as Android TV and the Google Assistant.
+             */
+            callerPackageInfo.permissions.contains(MEDIA_CONTENT_CONTROL) -> true
+            /**
+             * If the calling app has a notification listener it is able to retrieve notifications
+             * and can connect to an active [MediaSessionCompat].
+             *
+             * It's not required to allow apps with a notification listener to
+             * connect to your [MediaBrowserServiceCompat], but it does allow easy compatibility
+             * with apps such as Wear OS.
+             */
+            NotificationManagerCompat.getEnabledListenerPackages(this.context)
+                .contains(callerPackageInfo.packageName) -> true
+
+            // If none of the previous checks succeeded, then the caller is unrecognized.
+            else -> false
+        }
+
+        if (!isCallerKnown) {
+            logUnknownCaller(callerPackageInfo)
+        }
+
+        // Save our work for next time.
+        callerChecked[callingPackage] = Pair(callingUid, isCallerKnown)
+        return isCallerKnown
+    }
+
+    /**
+     * Logs an info level message with details of how to add a caller to the allowed callers list
+     * when the app is debuggable.
+     */
+    private fun logUnknownCaller(callerPackageInfo: CallerPackageInfo) {
+        if (BuildConfig.DEBUG) {
+            Log.w(TAG, "Unknown caller $callerPackageInfo")
+        }
+    }
+
+    /**
+     * Builds a [CallerPackageInfo] for a given package that can be used for all the
+     * various checks that are performed before allowing an app to connect to a
+     * [MediaBrowserServiceCompat].
+     */
+    private fun buildCallerInfo(callingPackage: String): CallerPackageInfo? {
+        val packageInfo = getPackageInfo(callingPackage) ?: return null
+
+        val appName = packageInfo.applicationInfo?.loadLabel(packageManager).toString()
+        val uid = packageInfo.applicationInfo?.uid ?: -1
+        val signature = getSignature(packageInfo)
+
+        val requestedPermissions = packageInfo.requestedPermissions?.asSequence().orEmpty()
+        val permissionFlags = packageInfo.requestedPermissionsFlags?.asSequence().orEmpty()
+        val activePermissions = (requestedPermissions zip permissionFlags)
+            .filter { (permission, flag) -> flag and REQUESTED_PERMISSION_GRANTED != 0 }
+            .mapTo(mutableSetOf()) { (permission, flag) -> permission }
+
+        return CallerPackageInfo(appName, callingPackage, uid, signature, activePermissions.toSet())
+    }
+
+    /**
+     * Looks up the [PackageInfo] for a package name.
+     * This requests both the signatures (for checking if an app is on the allow list) and
+     * the app's permissions, which allow for more flexibility in the allow list.
+     *
+     * @return [PackageInfo] for the package name or null if it's not found.
+     */
+    @Suppress("deprecation")
+    @SuppressLint("PackageManagerGetSignatures")
+    private fun getPackageInfo(callingPackage: String): PackageInfo? =
+        packageManager.getPackageInfo(
+            callingPackage,
+            PackageManager.GET_SIGNATURES or PackageManager.GET_PERMISSIONS
+        )
+
+    /**
+     * Gets the signature of a given package's [PackageInfo].
+     *
+     * The "signature" is a SHA-256 hash of the public key of the signing certificate used by
+     * the app.
+     *
+     * If the app is not found, or if the app does not have exactly one signature, this method
+     * returns `null` as the signature.
+     */
+    @Suppress("deprecation")
+    private fun getSignature(packageInfo: PackageInfo): String? =
+        if (packageInfo.signatures == null || packageInfo.signatures!!.size != 1) {
+            // Security best practices dictate that an app should be signed with exactly one (1)
+            // signature. Because of this, if there are multiple signatures, reject it.
+            null
+        } else {
+            val certificate = packageInfo.signatures!![0].toByteArray()
+            getSignatureSha256(certificate)
+        }
+
+    /**
+     * Finds the Android platform signing key signature. This key is never null.
+     */
+    private fun getSystemSignature(): String =
+        getPackageInfo(ANDROID_PLATFORM)?.let { platformInfo ->
+            getSignature(platformInfo)
+        } ?: throw IllegalStateException("Platform signature not found")
+
+    /**
+     * Creates a SHA-256 signature given a certificate byte array.
+     */
+    private fun getSignatureSha256(certificate: ByteArray): String {
+        val md: MessageDigest
+        try {
+            md = MessageDigest.getInstance("SHA256")
+        } catch (noSuchAlgorithmException: NoSuchAlgorithmException) {
+            Log.e(TAG, "No such algorithm: $noSuchAlgorithmException")
+            throw RuntimeException("Could not find SHA256 hash algorithm", noSuchAlgorithmException)
+        }
+        md.update(certificate)
+
+        // This code takes the byte array generated by `md.digest()` and joins each of the bytes
+        // to a string, applying the string format `%02x` on each digit before it's appended, with
+        // a colon (':') between each of the items.
+        // For example: input=[0,2,4,6,8,10,12], output="00:02:04:06:08:0a:0c"
+        return md.digest().joinToString(":") { String.format("%02x", it) }
+    }
+
+    /**
+     * Convenience class to hold all of the information about an app that's being checked
+     * to see if it's a known caller.
+     */
+    private data class CallerPackageInfo(
+        val name: String,
+        val packageName: String,
+        val uid: Int,
+        val signature: String?,
+        val permissions: Set<String>
+    )
+}
+
+private const val TAG = "PackageValidator"
+private const val ANDROID_PLATFORM = "android"

app/src/main/java/org/schabi/newpipe/player/mediasession/MediaSessionPlayerUi.java

@@ -38,10 +38,10 @@ public class MediaSessionPlayerUi extends PlayerUi
         implements SharedPreferences.OnSharedPreferenceChangeListener {
     private static final String TAG = "MediaSessUi";
 
-    @Nullable
-    private MediaSessionCompat mediaSession;
-    @Nullable
-    private MediaSessionConnector sessionConnector;
+    @NonNull
+    private final MediaSessionCompat mediaSession;
+    @NonNull
+    private final MediaSessionConnector sessionConnector;
 
     private final String ignoreHardwareMediaButtonsKey;
     private boolean shouldIgnoreHardwareMediaButtons = false;
@@ -50,9 +50,13 @@ public class MediaSessionPlayerUi extends PlayerUi
     private List<NotificationActionData> prevNotificationActions = List.of();
 
 
-    public MediaSessionPlayerUi(@NonNull final Player player) {
+    public MediaSessionPlayerUi(@NonNull final Player player,
+                                @NonNull final MediaSessionCompat mediaSession,
+                                @NonNull final MediaSessionConnector sessionConnector) {
         super(player);
-        ignoreHardwareMediaButtonsKey =
+        this.mediaSession = mediaSession;
+        this.sessionConnector = sessionConnector;
+        this.ignoreHardwareMediaButtonsKey =
                 context.getString(R.string.ignore_hardware_media_buttons_key);
     }
 
@@ -61,10 +65,8 @@ public class MediaSessionPlayerUi extends PlayerUi
         super.initPlayer();
         destroyPlayer(); // release previously used resources
 
-        mediaSession = new MediaSessionCompat(context, TAG);
         mediaSession.setActive(true);
 
-        sessionConnector = new MediaSessionConnector(mediaSession);
         sessionConnector.setQueueNavigator(new PlayQueueNavigator(mediaSession, player));
         sessionConnector.setPlayer(getForwardingPlayer());
 
@@ -89,27 +91,18 @@ public class MediaSessionPlayerUi extends PlayerUi
     public void destroyPlayer() {
         super.destroyPlayer();
         player.getPrefs().unregisterOnSharedPreferenceChangeListener(this);
-        if (sessionConnector != null) {
-            sessionConnector.setMediaButtonEventHandler(null);
-            sessionConnector.setPlayer(null);
-            sessionConnector.setQueueNavigator(null);
-            sessionConnector = null;
-        }
-        if (mediaSession != null) {
-            mediaSession.setActive(false);
-            mediaSession.release();
-            mediaSession = null;
-        }
+        sessionConnector.setMediaButtonEventHandler(null);
+        sessionConnector.setPlayer(null);
+        sessionConnector.setQueueNavigator(null);
+        mediaSession.setActive(false);
         prevNotificationActions = List.of();
     }
 
     @Override
     public void onThumbnailLoaded(@Nullable final Bitmap bitmap) {
         super.onThumbnailLoaded(bitmap);
-        if (sessionConnector != null) {
-            // the thumbnail is now loaded: invalidate the metadata to trigger a metadata update
-            sessionConnector.invalidateMediaSessionMetadata();
-        }
+        // the thumbnail is now loaded: invalidate the metadata to trigger a metadata update
+        sessionConnector.invalidateMediaSessionMetadata();
     }
 
 
@@ -200,8 +193,8 @@ public class MediaSessionPlayerUi extends PlayerUi
             return;
         }
 
-        if (sessionConnector == null) {
-            // sessionConnector will be null after destroyPlayer is called
+        if (!mediaSession.isActive()) {
+            // mediaSession will be inactive after destroyPlayer is called
             return;
         }
 

app/src/main/java/org/schabi/newpipe/player/notification/NotificationUtil.java

@@ -5,7 +5,9 @@ import static androidx.media.app.NotificationCompat.MediaStyle;
 import static org.schabi.newpipe.player.notification.NotificationConstants.ACTION_CLOSE;
 
 import android.annotation.SuppressLint;
+import android.app.Notification;
 import android.app.PendingIntent;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ServiceInfo;
 import android.graphics.Bitmap;
@@ -23,6 +25,8 @@ import androidx.core.content.ContextCompat;
 import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.player.Player;
+import org.schabi.newpipe.player.PlayerIntentType;
+import org.schabi.newpipe.player.PlayerService;
 import org.schabi.newpipe.player.mediasession.MediaSessionPlayerUi;
 import org.schabi.newpipe.util.NavigationHelper;
 
@@ -89,12 +93,9 @@ public final class NotificationUtil {
             Log.d(TAG, "createNotification()");
         }
         notificationManager = NotificationManagerCompat.from(player.getContext());
-        final NotificationCompat.Builder builder =
-                new NotificationCompat.Builder(player.getContext(),
-                player.getContext().getString(R.string.notification_channel_id));
-        final MediaStyle mediaStyle = new MediaStyle();
 
         // setup media style (compact notification slots and media session)
+        final MediaStyle mediaStyle = new MediaStyle();
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
             // notification actions are ignored on Android 13+, and are replaced by code in
             // MediaSessionPlayerUi
@@ -107,18 +108,9 @@ public final class NotificationUtil {
                 .ifPresent(mediaStyle::setMediaSession);
 
         // setup notification builder
-        builder.setStyle(mediaStyle)
-                .setPriority(NotificationCompat.PRIORITY_HIGH)
-                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
-                .setCategory(NotificationCompat.CATEGORY_TRANSPORT)
-                .setShowWhen(false)
-                .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
-                .setColor(ContextCompat.getColor(player.getContext(),
-                        R.color.dark_background_color))
+        final var builder = setupNotificationBuilder(player.getContext(), mediaStyle)
                 .setColorized(player.getPrefs().getBoolean(
-                        player.getContext().getString(R.string.notification_colorize_key), true))
-                .setDeleteIntent(PendingIntentCompat.getBroadcast(player.getContext(),
-                        NOTIFICATION_ID, new Intent(ACTION_CLOSE), FLAG_UPDATE_CURRENT, false));
+                        player.getContext().getString(R.string.notification_colorize_key), true));
 
         // set the initial value for the video thumbnail, updatable with updateNotificationThumbnail
         setLargeIcon(builder);
@@ -167,19 +159,17 @@ public final class NotificationUtil {
                 && notificationBuilder.mActions.get(2).actionIntent != null);
     }
 
+    public static void startForegroundWithDummyNotification(final PlayerService service) {
+        final var builder = setupNotificationBuilder(service, new MediaStyle());
+        startForeground(service, builder.build());
+    }
 
     public void createNotificationAndStartForeground() {
         if (notificationBuilder == null) {
             notificationBuilder = createNotification();
         }
         updateNotification();
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-            player.getService().startForeground(NOTIFICATION_ID, notificationBuilder.build(),
-                    ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK);
-        } else {
-            player.getService().startForeground(NOTIFICATION_ID, notificationBuilder.build());
-        }
+        startForeground(player.getService(), notificationBuilder.build());
     }
 
     public void cancelNotificationAndStopForeground() {
@@ -193,6 +183,34 @@ public final class NotificationUtil {
     }
 
 
+    /////////////////////////////////////////////////////
+    // STATIC FUNCTIONS IN COMMON BETWEEN DUMMY AND REAL NOTIFICATION
+    /////////////////////////////////////////////////////
+
+    private static NotificationCompat.Builder setupNotificationBuilder(final Context context,
+                                                                       final MediaStyle style) {
+        return new NotificationCompat.Builder(context,
+                context.getString(R.string.notification_channel_id))
+                .setStyle(style)
+                .setPriority(NotificationCompat.PRIORITY_HIGH)
+                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+                .setCategory(NotificationCompat.CATEGORY_TRANSPORT)
+                .setShowWhen(false)
+                .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
+                .setColor(ContextCompat.getColor(context, R.color.dark_background_color))
+                .setDeleteIntent(PendingIntentCompat.getBroadcast(context,
+                        NOTIFICATION_ID, new Intent(ACTION_CLOSE), FLAG_UPDATE_CURRENT, false));
+    }
+
+    private static void startForeground(final PlayerService service,
+                                        final Notification notification) {
+        // ServiceInfo constants are not used below Android Q, so 0 is set here
+        final int serviceType = Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q
+                ? ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK : 0;
+        ServiceCompat.startForeground(service, NOTIFICATION_ID, notification, serviceType);
+    }
+
+
     /////////////////////////////////////////////////////
     // ACTIONS
     /////////////////////////////////////////////////////
@@ -256,7 +274,9 @@ public final class NotificationUtil {
         } else {
             // We are playing in fragment. Don't open another activity just show fragment. That's it
             final Intent intent = NavigationHelper.getPlayerIntent(
-                    player.getContext(), MainActivity.class, null, true);
+                    player.getContext(), MainActivity.class, null,
+                    PlayerIntentType.AllOthers);
+            intent.putExtra(Player.RESUME_PLAYBACK, true);
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             intent.setAction(Intent.ACTION_MAIN);
             intent.addCategory(Intent.CATEGORY_LAUNCHER);

app/src/main/java/org/schabi/newpipe/player/playqueue/AbstractInfoPlayQueue.java

@@ -3,6 +3,7 @@ package org.schabi.newpipe.player.playqueue;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
 import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.ListExtractor;
@@ -23,18 +24,23 @@ abstract class AbstractInfoPlayQueue<T extends ListInfo<? extends InfoItem>>
 
     final int serviceId;
     final String baseUrl;
+    @Nullable
     Page nextPage;
 
     private transient Disposable fetchReactor;
 
     protected AbstractInfoPlayQueue(final T info) {
+        this(info, 0);
+    }
+
+    protected AbstractInfoPlayQueue(final T info, final int index) {
         this(info.getServiceId(), info.getUrl(), info.getNextPage(),
                 info.getRelatedItems()
                         .stream()
                         .filter(StreamInfoItem.class::isInstance)
                         .map(StreamInfoItem.class::cast)
                         .collect(Collectors.toList()),
-                0);
+                index);
     }
 
     protected AbstractInfoPlayQueue(final int serviceId,

app/src/main/java/org/schabi/newpipe/player/playqueue/PlayQueue.java

@@ -291,6 +291,22 @@ public abstract class PlayQueue implements Serializable {
         broadcast(new AppendEvent(itemList.size()));
     }
 
+    /**
+     * Add the given item after the current stream.
+     *
+     * @param item item to add.
+     * @param skipIfSame if set, skip adding if the next stream is the same stream.
+     */
+    public void enqueueNext(@NonNull final PlayQueueItem item, final boolean skipIfSame) {
+        final int currentIndex = getIndex();
+        // if the next item is the same item as the one we want to enqueue, skip if flag is true
+        if (skipIfSame && item.isSameItem(getItem(currentIndex + 1))) {
+            return;
+        }
+        append(List.of(item));
+        move(size() - 1, currentIndex + 1);
+    }
+
     /**
      * Removes the item at the given index from the play queue.
      * <p>
@@ -529,8 +545,7 @@ public abstract class PlayQueue implements Serializable {
             final PlayQueueItem stream = streams.get(i);
             final PlayQueueItem otherStream = other.streams.get(i);
             // Check is based on serviceId and URL
-            if (stream.getServiceId() != otherStream.getServiceId()
-                    || !stream.getUrl().equals(otherStream.getUrl())) {
+            if (!stream.isSameItem(otherStream)) {
                 return false;
             }
         }

app/src/main/java/org/schabi/newpipe/player/playqueue/PlayQueueItem.java

@@ -38,7 +38,7 @@ public class PlayQueueItem implements Serializable {
     private long recoveryPosition;
     private Throwable error;
 
-    PlayQueueItem(@NonNull final StreamInfo info) {
+    public PlayQueueItem(@NonNull final StreamInfo info) {
         this(info.getName(), info.getUrl(), info.getServiceId(), info.getDuration(),
                 info.getThumbnails(), info.getUploaderName(),
                 info.getUploaderUrl(), info.getStreamType());
@@ -71,6 +71,22 @@ public class PlayQueueItem implements Serializable {
         this.recoveryPosition = RECOVERY_UNSET;
     }
 
+    /** Whether these two items should be treated as the same stream
+     * for the sake of keeping the same player running when e.g. jumping between timestamps.
+     *
+     * @param other the {@link PlayQueueItem} to compare against.
+     * @return whether the two items are the same so the stream can be re-used.
+     */
+    public boolean isSameItem(@Nullable final PlayQueueItem other) {
+        if (other == null) {
+            return false;
+        }
+        // We assume that the same service & URL uniquely determines
+        // that we can keep the same stream running.
+        return serviceId == other.serviceId
+                && url.equals(other.url);
+    }
+
     @NonNull
     public String getTitle() {
         return title;

app/src/main/java/org/schabi/newpipe/player/playqueue/PlaylistPlayQueue.java

@@ -16,6 +16,10 @@ public final class PlaylistPlayQueue extends AbstractInfoPlayQueue<PlaylistInfo>
         super(info);
     }
 
+    public PlaylistPlayQueue(final PlaylistInfo info, final int index) {
+        super(info, index);
+    }
+
     public PlaylistPlayQueue(final int serviceId,
                              final String url,
                              final Page nextPage,

app/src/main/java/org/schabi/newpipe/player/playqueue/SinglePlayQueue.java

@@ -16,7 +16,9 @@ public final class SinglePlayQueue extends PlayQueue {
     public SinglePlayQueue(final StreamInfo info) {
         super(0, List.of(new PlayQueueItem(info)));
     }
-
+    public SinglePlayQueue(final PlayQueueItem item) {
+        super(0, List.of(item));
+    }
     public SinglePlayQueue(final StreamInfo info, final long startPosition) {
         super(0, List.of(new PlayQueueItem(info)));
         getItem().setRecoveryPosition(startPosition);

app/src/main/java/org/schabi/newpipe/player/ui/MainPlayerUi.java

@@ -25,9 +25,7 @@ import android.graphics.Color;
 import android.os.Handler;
 import android.os.Looper;
 import android.provider.Settings;
-import android.util.DisplayMetrics;
 import android.util.Log;
-import android.util.TypedValue;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.ViewGroup;
@@ -44,6 +42,7 @@ import androidx.fragment.app.FragmentActivity;
 import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.google.android.exoplayer2.ui.SubtitleView;
 import com.google.android.exoplayer2.video.VideoSize;
 
 import org.schabi.newpipe.R;
@@ -522,11 +521,8 @@ public final class MainPlayerUi extends VideoPlayerUi implements View.OnLayoutCh
 
     @Override
     protected void setupSubtitleView(final float captionScale) {
-        final DisplayMetrics metrics = context.getResources().getDisplayMetrics();
-        final int minimumLength = Math.min(metrics.heightPixels, metrics.widthPixels);
-        final float captionRatioInverse = 20f + 4f * (1.0f - captionScale);
-        binding.subtitleView.setFixedTextSize(
-                TypedValue.COMPLEX_UNIT_PX, minimumLength / captionRatioInverse);
+        binding.subtitleView.setFractionalTextSize(
+                SubtitleView.DEFAULT_TEXT_SIZE_FRACTION * captionScale);
     }
     //endregion
 

app/src/main/java/org/schabi/newpipe/player/ui/PopupPlayerUi.java

@@ -382,7 +382,7 @@ public final class PopupPlayerUi extends VideoPlayerUi {
                     private void end() {
                         windowManager.removeView(closeOverlayBinding.getRoot());
                         closeOverlayBinding = null;
-                        player.getService().stopService();
+                        player.getService().destroyPlayerAndStopService();
                     }
                 }).start();
     }
@@ -424,9 +424,8 @@ public final class PopupPlayerUi extends VideoPlayerUi {
 
     @Override
     protected void setupSubtitleView(final float captionScale) {
-        final float captionRatio = (captionScale - 1.0f) / 5.0f + 1.0f;
         binding.subtitleView.setFractionalTextSize(
-                SubtitleView.DEFAULT_TEXT_SIZE_FRACTION * captionRatio);
+                SubtitleView.DEFAULT_TEXT_SIZE_FRACTION * captionScale);
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/player/ui/VideoPlayerUi.java

@@ -1414,6 +1414,10 @@ public abstract class VideoPlayerUi extends PlayerUi implements SeekBar.OnSeekBa
         binding.subtitleView.setStyle(captionStyle);
     }
 
+    /**
+     *
+     * @param captionScale Value returned by {@link PlayerHelper#getCaptionScale}.
+     */
     protected abstract void setupSubtitleView(float captionScale);
     //endregion
 

app/src/main/java/org/schabi/newpipe/settings/BackupRestoreSettingsFragment.java

@@ -1,7 +1,6 @@
 package org.schabi.newpipe.settings;
 
 import static org.schabi.newpipe.extractor.utils.Utils.isBlank;
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 import android.app.Activity;
 import android.app.AlertDialog;
@@ -126,7 +125,6 @@ public class BackupRestoreSettingsFragment extends BasePreferenceFragment {
     }
 
     private void requestExportPathResult(final ActivityResult result) {
-        assureCorrectAppLanguage(requireContext());
         if (result.getResultCode() == Activity.RESULT_OK && result.getData() != null) {
             // will be saved only on success
             final Uri lastExportDataUri = result.getData().getData();
@@ -139,7 +137,6 @@ public class BackupRestoreSettingsFragment extends BasePreferenceFragment {
     }
 
     private void requestImportPathResult(final ActivityResult result) {
-        assureCorrectAppLanguage(requireContext());
         if (result.getResultCode() == Activity.RESULT_OK && result.getData() != null) {
             // will be saved only on success
             final Uri lastImportDataUri = result.getData().getData();

app/src/main/java/org/schabi/newpipe/settings/ContentSettingsFragment.java

@@ -1,57 +1,89 @@
 package org.schabi.newpipe.settings;
 
 import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
+import android.provider.Settings;
 import android.util.Log;
 import android.widget.Toast;
 
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.core.os.LocaleListCompat;
 import androidx.preference.Preference;
 
 import org.schabi.newpipe.DownloaderImpl;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.localization.ContentCountry;
-import org.schabi.newpipe.extractor.localization.Localization;
+import org.schabi.newpipe.player.helper.PlayerHelper;
+import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
 import org.schabi.newpipe.util.image.PreferredImageQuality;
 
 import java.io.IOException;
+import java.util.Locale;
 
 public class ContentSettingsFragment extends BasePreferenceFragment {
     private String youtubeRestrictedModeEnabledKey;
 
-    private Localization initialSelectedLocalization;
-    private ContentCountry initialSelectedContentCountry;
-    private String initialLanguage;
-
     @Override
     public void onCreatePreferences(final Bundle savedInstanceState, final String rootKey) {
         youtubeRestrictedModeEnabledKey = getString(R.string.youtube_restricted_mode_enabled);
 
         addPreferencesFromResourceRegistry();
 
-        initialSelectedLocalization = org.schabi.newpipe.util.Localization
-                .getPreferredLocalization(requireContext());
-        initialSelectedContentCountry = org.schabi.newpipe.util.Localization
-                .getPreferredContentCountry(requireContext());
-        initialLanguage = defaultPreferences.getString(getString(R.string.app_language_key), "en");
+        setupAppLanguagePreferences();
+        setupImageQualityPref();
+    }
 
-        final Preference imageQualityPreference = requirePreference(R.string.image_quality_key);
-        imageQualityPreference.setOnPreferenceChangeListener(
-                (preference, newValue) -> {
-                    ImageStrategy.setPreferredImageQuality(PreferredImageQuality
-                            .fromPreferenceKey(requireContext(), (String) newValue));
-                    try {
-                        PicassoHelper.clearCache(preference.getContext());
-                        Toast.makeText(preference.getContext(),
-                                R.string.thumbnail_cache_wipe_complete_notice, Toast.LENGTH_SHORT)
-                                .show();
-                    } catch (final IOException e) {
-                        Log.e(TAG, "Unable to clear Picasso cache", e);
-                    }
-                    return true;
-                });
+    private void setupAppLanguagePreferences() {
+        final Preference appLanguagePref = requirePreference(R.string.app_language_key);
+        // Android 13+ allows to set app specific languages
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            appLanguagePref.setVisible(false);
+
+            final Preference newAppLanguagePref =
+                    requirePreference(R.string.app_language_android_13_and_up_key);
+            newAppLanguagePref.setSummaryProvider(preference -> {
+                final Locale loc = AppCompatDelegate.getApplicationLocales().get(0);
+                return loc != null ? loc.getDisplayName() : getString(R.string.systems_language);
+            });
+            newAppLanguagePref.setOnPreferenceClickListener(preference -> {
+                final Intent intent = new Intent(Settings.ACTION_APP_LOCALE_SETTINGS)
+                        .setData(Uri.fromParts("package", requireContext().getPackageName(), null));
+                startActivity(intent);
+                return true;
+            });
+            newAppLanguagePref.setVisible(true);
+            return;
+        }
+
+        appLanguagePref.setOnPreferenceChangeListener((preference, newValue) -> {
+            final String language = (String) newValue;
+            final String systemLang = getString(R.string.default_localization_key);
+            final String tag = systemLang.equals(language) ? null : language;
+            AppCompatDelegate.setApplicationLocales(LocaleListCompat.forLanguageTags(tag));
+            return true;
+        });
+    }
+
+    private void setupImageQualityPref() {
+        requirePreference(R.string.image_quality_key).setOnPreferenceChangeListener(
+            (preference, newValue) -> {
+                ImageStrategy.setPreferredImageQuality(PreferredImageQuality
+                    .fromPreferenceKey(requireContext(), (String) newValue));
+                try {
+                    PicassoHelper.clearCache(preference.getContext());
+                    Toast.makeText(preference.getContext(),
+                            R.string.thumbnail_cache_wipe_complete_notice, Toast.LENGTH_SHORT)
+                        .show();
+                } catch (final IOException e) {
+                    Log.e(TAG, "Unable to clear Picasso cache", e);
+                }
+                return true;
+            });
     }
 
     @Override
@@ -72,20 +104,10 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
     public void onDestroy() {
         super.onDestroy();
 
-        final Localization selectedLocalization = org.schabi.newpipe.util.Localization
-                .getPreferredLocalization(requireContext());
-        final ContentCountry selectedContentCountry = org.schabi.newpipe.util.Localization
-                .getPreferredContentCountry(requireContext());
-        final String selectedLanguage =
-                defaultPreferences.getString(getString(R.string.app_language_key), "en");
-
-        if (!selectedLocalization.equals(initialSelectedLocalization)
-                || !selectedContentCountry.equals(initialSelectedContentCountry)
-                || !selectedLanguage.equals(initialLanguage)) {
-            Toast.makeText(requireContext(), R.string.localization_changes_requires_app_restart,
-                    Toast.LENGTH_LONG).show();
-
-            NewPipe.setupLocalization(selectedLocalization, selectedContentCountry);
-        }
+        final Context context = requireContext();
+        NewPipe.setupLocalization(
+            Localization.getPreferredLocalization(context),
+            Localization.getPreferredContentCountry(context));
+        PlayerHelper.resetFormat();
     }
 }

app/src/main/java/org/schabi/newpipe/settings/DownloadSettingsFragment.java

@@ -1,7 +1,5 @@
 package org.schabi.newpipe.settings;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.app.Activity;
 import android.content.ContentResolver;
 import android.content.Context;
@@ -209,8 +207,6 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
     }
 
     private void requestDownloadPathResult(final ActivityResult result, final String key) {
-        assureCorrectAppLanguage(getContext());
-
         if (result.getResultCode() != Activity.RESULT_OK) {
             return;
         }

app/src/main/java/org/schabi/newpipe/settings/NewPipeSettings.java

@@ -13,6 +13,7 @@ import androidx.preference.PreferenceManager;
 
 import org.schabi.newpipe.App;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.settings.migration.MigrationManager;
 import org.schabi.newpipe.util.DeviceUtils;
 
 import java.io.File;
@@ -46,7 +47,7 @@ public final class NewPipeSettings {
 
     public static void initSettings(final Context context) {
         // first run migrations, then setDefaultValues, since the latter requires the correct types
-        SettingMigrations.runMigrationsIfNeeded(context);
+        MigrationManager.runMigrationsIfNeeded(context);
 
         // readAgain is true so that if new settings are added their default value is set
         PreferenceManager.setDefaultValues(context, R.xml.main_settings, true);
@@ -102,12 +103,12 @@ public final class NewPipeSettings {
     }
 
     public static boolean useStorageAccessFramework(final Context context) {
-        // There's a FireOS bug which prevents SAF open/close dialogs from being confirmed with a
-        // remote (see #6455).
-        if (DeviceUtils.isFireTv()) {
-            return false;
-        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
             return true;
+        } else if (DeviceUtils.isFireTv()) {
+            // There's a FireOS bug which prevents SAF open/close dialogs from being confirmed with
+            // a remote (see #6455).
+            return false;
         }
 
         final String key = context.getString(R.string.storage_use_saf);

app/src/main/java/org/schabi/newpipe/settings/SelectFeedGroupFragment.java

@@ -0,0 +1,214 @@
+package org.schabi.newpipe.settings;
+
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import org.schabi.newpipe.NewPipeDatabase;
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.database.AppDatabase;
+import org.schabi.newpipe.database.feed.model.FeedGroupEntity;
+import org.schabi.newpipe.error.ErrorUtil;
+import org.schabi.newpipe.util.ThemeHelper;
+
+import java.util.List;
+import java.util.Vector;
+
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.Observer;
+import io.reactivex.rxjava3.disposables.Disposable;
+import io.reactivex.rxjava3.schedulers.Schedulers;
+
+/**
+ * Created by Christian Schabesberger on 26.09.17.
+ * SelectChannelFragment.java is part of NewPipe.
+ * <p>
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * </p>
+ * <p>
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * </p>
+ * <p>
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ * </p>
+ */
+
+public class SelectFeedGroupFragment extends DialogFragment {
+
+    private OnSelectedListener onSelectedListener = null;
+    private OnCancelListener onCancelListener = null;
+
+    private ProgressBar progressBar;
+    private TextView emptyView;
+    private RecyclerView recyclerView;
+
+    private List<FeedGroupEntity> feedGroups = new Vector<>();
+
+    public void setOnSelectedListener(final OnSelectedListener listener) {
+        onSelectedListener = listener;
+    }
+
+    public void setOnCancelListener(final OnCancelListener listener) {
+        onCancelListener = listener;
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Init
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    public void onCreate(@Nullable final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setStyle(STYLE_NO_TITLE, ThemeHelper.getMinWidthDialogTheme(requireContext()));
+    }
+
+    @Override
+    public View onCreateView(@NonNull final LayoutInflater inflater, final ViewGroup container,
+                             final Bundle savedInstanceState) {
+        final View v = inflater.inflate(R.layout.select_feed_group_fragment, container, false);
+        recyclerView = v.findViewById(R.id.items_list);
+        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+        final SelectFeedGroupAdapter feedGroupAdapter = new SelectFeedGroupAdapter();
+        recyclerView.setAdapter(feedGroupAdapter);
+
+        progressBar = v.findViewById(R.id.progressBar);
+        emptyView = v.findViewById(R.id.empty_state_view);
+        progressBar.setVisibility(View.VISIBLE);
+        recyclerView.setVisibility(View.GONE);
+        emptyView.setVisibility(View.GONE);
+
+
+        final AppDatabase database = NewPipeDatabase.getInstance(requireContext());
+        database.feedGroupDAO().getAll().toObservable()
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(getFeedGroupObserver());
+
+        return v;
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Handle actions
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    public void onCancel(@NonNull final DialogInterface dialogInterface) {
+        super.onCancel(dialogInterface);
+        if (onCancelListener != null) {
+            onCancelListener.onCancel();
+        }
+    }
+
+    private void clickedItem(final int position) {
+        if (onSelectedListener != null) {
+            final FeedGroupEntity entry = feedGroups.get(position);
+            onSelectedListener
+                    .onFeedGroupSelected(entry.getUid(), entry.getName(),
+                            entry.getIcon().getDrawableResource());
+        }
+        dismiss();
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Item handling
+    //////////////////////////////////////////////////////////////////////////*/
+
+    private void displayFeedGroups(final List<FeedGroupEntity> newFeedGroups) {
+        this.feedGroups = newFeedGroups;
+        progressBar.setVisibility(View.GONE);
+        if (newFeedGroups.isEmpty()) {
+            emptyView.setVisibility(View.VISIBLE);
+            return;
+        }
+        recyclerView.setVisibility(View.VISIBLE);
+
+    }
+
+    private Observer<List<FeedGroupEntity>> getFeedGroupObserver() {
+        return new Observer<List<FeedGroupEntity>>() {
+            @Override
+            public void onSubscribe(@NonNull final Disposable disposable) { }
+
+            @Override
+            public void onNext(@NonNull final List<FeedGroupEntity> newGroups) {
+                displayFeedGroups(newGroups);
+            }
+
+            @Override
+            public void onError(@NonNull final Throwable exception) {
+                ErrorUtil.showUiErrorSnackbar(SelectFeedGroupFragment.this,
+                        "Loading Feed Groups", exception);
+            }
+
+            @Override
+            public void onComplete() { }
+        };
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Interfaces
+    //////////////////////////////////////////////////////////////////////////*/
+
+    public interface OnSelectedListener {
+        void onFeedGroupSelected(Long groupId, String name, int icon);
+    }
+
+    public interface OnCancelListener {
+        void onCancel();
+    }
+
+    private class SelectFeedGroupAdapter
+            extends RecyclerView.Adapter<SelectFeedGroupAdapter.SelectFeedGroupItemHolder> {
+        @NonNull
+        @Override
+        public SelectFeedGroupItemHolder onCreateViewHolder(final ViewGroup parent,
+                                                          final int viewType) {
+            final View item = LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.select_feed_group_item, parent, false);
+            return new SelectFeedGroupItemHolder(item);
+        }
+
+        @Override
+        public void onBindViewHolder(final SelectFeedGroupItemHolder holder, final int position) {
+            final FeedGroupEntity entry = feedGroups.get(position);
+            holder.titleView.setText(entry.getName());
+            holder.view.setOnClickListener(view -> clickedItem(position));
+            holder.thumbnailView.setImageResource(entry.getIcon().getDrawableResource());
+        }
+
+        @Override
+        public int getItemCount() {
+            return feedGroups.size();
+        }
+
+        public class SelectFeedGroupItemHolder extends RecyclerView.ViewHolder {
+            public final View view;
+            final ImageView thumbnailView;
+            final TextView titleView;
+            SelectFeedGroupItemHolder(final View v) {
+                super(v);
+                this.view = v;
+                thumbnailView = v.findViewById(R.id.itemThumbnailView);
+                titleView = v.findViewById(R.id.itemTitleView);
+            }
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/settings/SettingsActivity.java

@@ -1,7 +1,5 @@
 package org.schabi.newpipe.settings;
 
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 import android.content.Context;
 import android.os.Bundle;
 import android.text.TextUtils;
@@ -89,7 +87,6 @@ public class SettingsActivity extends AppCompatActivity implements
     @Override
     protected void onCreate(final Bundle savedInstanceBundle) {
         setTheme(ThemeHelper.getSettingsThemeStyle(this));
-        assureCorrectAppLanguage(this);
 
         super.onCreate(savedInstanceBundle);
         Bridge.restoreInstanceState(this, savedInstanceBundle);
@@ -228,7 +225,6 @@ public class SettingsActivity extends AppCompatActivity implements
 
         // Build search items
         final Context searchContext = getApplicationContext();
-        assureCorrectAppLanguage(searchContext);
         final PreferenceParser parser = new PreferenceParser(searchContext, config);
         final PreferenceSearcher searcher = new PreferenceSearcher(config);
 

app/src/main/java/org/schabi/newpipe/settings/migration/MigrationManager.java

@@ -0,0 +1,103 @@
+package org.schabi.newpipe.settings.migration;
+
+import android.content.Context;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
+import androidx.core.util.Consumer;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.error.ErrorUtil;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * MigrationManager is responsible for running migrations and showing the user information about
+ * the migrations that were applied.
+ */
+public final class MigrationManager {
+
+    private static final String TAG = MigrationManager.class.getSimpleName();
+    /**
+     * List of UI actions that are performed after the UI is initialized (e.g. showing alert
+     * dialogs) to inform the user about changes that were applied by migrations.
+     */
+    private static final List<Consumer<Context>> MIGRATION_INFO = new ArrayList<>();
+
+    private MigrationManager() {
+        // MigrationManager is a utility class that is completely static
+    }
+
+    /**
+     * Run all migrations that are needed for the current version of NewPipe.
+     * This method should be called at the start of the application, before any other operations
+     * that depend on the settings.
+     *
+     * @param context Context that can be used to run migrations
+     */
+    public static void runMigrationsIfNeeded(@NonNull final Context context) {
+        SettingMigrations.runMigrationsIfNeeded(context);
+    }
+
+    /**
+     * Perform UI actions informing about migrations that took place if they are present.
+     * @param context Context that can be used to show dialogs/snackbars/toasts
+     */
+    public static void showUserInfoIfPresent(@NonNull final Context context) {
+        if (MIGRATION_INFO.isEmpty()) {
+            return;
+        }
+
+        try {
+            MIGRATION_INFO.get(0).accept(context);
+        } catch (final Exception e) {
+            ErrorUtil.showUiErrorSnackbar(context, "Showing migration info to the user", e);
+            // Remove the migration that caused the error and continue with the next one
+            MIGRATION_INFO.remove(0);
+            showUserInfoIfPresent(context);
+        }
+    }
+
+    /**
+     * Add a migration info action that will be executed after the UI is initialized.
+     * This can be used to show dialogs/snackbars/toasts to inform the user about changes that
+     * were applied by migrations.
+     *
+     * @param info the action to be executed
+     */
+    public static void addMigrationInfo(final Consumer<Context> info) {
+        MIGRATION_INFO.add(info);
+    }
+
+    /**
+     * This method should be called when the user dismisses the migration info
+     * to check if there are any more migration info actions to be shown.
+     * @param context Context that can be used to show dialogs/snackbars/toasts
+     */
+    public static void onMigrationInfoDismissed(@NonNull final Context context) {
+        MIGRATION_INFO.remove(0);
+        showUserInfoIfPresent(context);
+    }
+
+    /**
+     * Creates a dialog to inform the user about the migration.
+     * @param uiContext Context that can be used to show dialogs/snackbars/toasts
+     * @param title the title of the dialog
+     * @param message the message of the dialog
+     * @return the dialog that can be shown to the user with a custom dismiss listener
+     */
+    static AlertDialog createMigrationInfoDialog(@NonNull final Context uiContext,
+                                                 @NonNull final String title,
+                                                 @NonNull final String message) {
+        return new AlertDialog.Builder(uiContext)
+                .setTitle(title)
+                .setMessage(message)
+                .setPositiveButton(R.string.ok, null)
+                .setOnDismissListener(dialog ->
+                        MigrationManager.onMigrationInfoDismissed(uiContext))
+                .setCancelable(false) // prevents the dialog from being dismissed accidentally
+                .create();
+    }
+
+}

app/src/main/java/org/schabi/newpipe/settings/migration/SettingMigrations.java

@@ -1,10 +1,15 @@
-package org.schabi.newpipe.settings;
+package org.schabi.newpipe.settings.migration;
+
+import static org.schabi.newpipe.MainActivity.DEBUG;
+import static org.schabi.newpipe.extractor.ServiceList.SoundCloud;
+import static org.schabi.newpipe.extractor.ServiceList.YouTube;
 
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
+import androidx.core.util.Consumer;
 import androidx.preference.PreferenceManager;
 
 import org.schabi.newpipe.App;
@@ -12,20 +17,32 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.error.ErrorInfo;
 import org.schabi.newpipe.error.ErrorUtil;
 import org.schabi.newpipe.error.UserAction;
+import org.schabi.newpipe.settings.tabs.Tab;
+import org.schabi.newpipe.settings.tabs.TabsManager;
 import org.schabi.newpipe.util.DeviceUtils;
 
 import java.util.Collections;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
-
-import static org.schabi.newpipe.MainActivity.DEBUG;
+import java.util.stream.Collectors;
 
 /**
- * In order to add a migration, follow these steps, given P is the previous version:<br>
- * - in the class body add a new {@code MIGRATION_P_P+1 = new Migration(P, P+1) { ... }} and put in
- *   the {@code migrate()} method the code that need to be run when migrating from P to P+1<br>
- * - add {@code MIGRATION_P_P+1} at the end of {@link SettingMigrations#SETTING_MIGRATIONS}<br>
- * - increment {@link SettingMigrations#VERSION}'s value by 1 (so it should become P+1)
+ * This class contains the code to migrate the settings from one version to another.
+ * Migrations are run automatically when the app is started and the settings version changed.
+ * <br>
+ * In order to add a migration, follow these steps, given {@code P} is the previous version:
+ * <ul>
+ * <li>in the class body add a new {@code MIGRATION_P_P+1 = new Migration(P, P+1) { ... }} and put
+ *     in the {@code migrate()} method the code that need to be run
+ *     when migrating from {@code P} to {@code P+1}</li>
+ * <li>add {@code MIGRATION_P_P+1} at the end of {@link SettingMigrations#SETTING_MIGRATIONS}</li>
+ * <li>increment {@link SettingMigrations#VERSION}'s value by 1
+ *     (so it becomes {@code P+1})</li>
+ * </ul>
+ * Migrations can register UI actions using {@link MigrationManager#addMigrationInfo(Consumer)}
+ * that will be performed after the UI is initialized to inform the user about changes
+ * that were applied by migrations.
  */
 public final class SettingMigrations {
 
@@ -129,7 +146,7 @@ public final class SettingMigrations {
         }
     };
 
-    public static final Migration MIGRATION_5_6 = new Migration(5, 6) {
+    private static final Migration MIGRATION_5_6 = new Migration(5, 6) {
         @Override
         protected void migrate(@NonNull final Context context) {
             final boolean loadImages = sp.getBoolean("download_thumbnail_key", true);
@@ -143,6 +160,67 @@ public final class SettingMigrations {
         }
     };
 
+    private static final Migration MIGRATION_6_7 = new Migration(6, 7) {
+        @Override
+        protected void migrate(@NonNull final Context context) {
+            // The SoundCloud Top 50 Kiosk was removed in the extractor,
+            // so we remove the corresponding tab if it exists.
+            final TabsManager tabsManager = TabsManager.getManager(context);
+            final List<Tab> tabs = tabsManager.getTabs();
+            final List<Tab> cleanedTabs = tabs.stream()
+                    .filter(tab -> !(tab instanceof Tab.KioskTab kioskTab
+                            && kioskTab.getKioskServiceId() == SoundCloud.getServiceId()
+                            && kioskTab.getKioskId().equals("Top 50")))
+                    .collect(Collectors.toUnmodifiableList());
+            if (tabs.size() != cleanedTabs.size()) {
+                tabsManager.saveTabs(cleanedTabs);
+                // create an AlertDialog to inform the user about the change
+                MigrationManager.addMigrationInfo(uiContext ->
+                        MigrationManager.createMigrationInfoDialog(
+                                uiContext,
+                                uiContext.getString(R.string.migration_info_6_7_title),
+                                uiContext.getString(R.string.migration_info_6_7_message))
+                                .show());
+            }
+        }
+    };
+
+    private static final Migration MIGRATION_7_8 = new Migration(7, 8) {
+        @Override
+        protected void migrate(@NonNull final Context context) {
+            // YouTube remove the combined Trending kiosk, see
+            // https://github.com/TeamNewPipe/NewPipe/discussions/12445 for more information.
+            // If the user has a dedicated YouTube/Trending kiosk tab,
+            // it is removed and replaced with the new live kiosk tab.
+            // The default trending kiosk tab is not touched
+            // because it uses the default kiosk provided by the extractor
+            // and is thus updated automatically.
+            final TabsManager tabsManager = TabsManager.getManager(context);
+            final List<Tab> tabs = tabsManager.getTabs();
+            final List<Tab> cleanedTabs = tabs.stream()
+                    .filter(tab -> !(tab instanceof Tab.KioskTab kioskTab
+                            && kioskTab.getKioskServiceId() == YouTube.getServiceId()
+                            && kioskTab.getKioskId().equals("Trending")))
+                    .collect(Collectors.toUnmodifiableList());
+            if (tabs.size() != cleanedTabs.size()) {
+                tabsManager.saveTabs(cleanedTabs);
+            }
+
+            final boolean hasDefaultTrendingTab = tabs.stream()
+                    .anyMatch(tab -> tab instanceof Tab.DefaultKioskTab);
+
+            if (tabs.size() != cleanedTabs.size() || hasDefaultTrendingTab) {
+                // User is informed about the change
+                MigrationManager.addMigrationInfo(uiContext ->
+                        MigrationManager.createMigrationInfoDialog(
+                                        uiContext,
+                                        uiContext.getString(R.string.migration_info_7_8_title),
+                                        uiContext.getString(R.string.migration_info_7_8_message))
+                                .show());
+            }
+        }
+    };
+
     /**
      * List of all implemented migrations.
      * <p>
@@ -156,15 +234,17 @@ public final class SettingMigrations {
             MIGRATION_3_4,
             MIGRATION_4_5,
             MIGRATION_5_6,
+            MIGRATION_6_7,
+            MIGRATION_7_8,
     };
 
     /**
      * Version number for preferences. Must be incremented every time a migration is necessary.
      */
-    private static final int VERSION = 6;
+    private static final int VERSION = 8;
 
 
-    public static void runMigrationsIfNeeded(@NonNull final Context context) {
+    static void runMigrationsIfNeeded(@NonNull final Context context) {
         // setup migrations and check if there is something to do
         sp = PreferenceManager.getDefaultSharedPreferences(context);
         final String lastPrefVersionKey = context.getString(R.string.last_used_preferences_version);

app/src/main/java/org/schabi/newpipe/settings/tabs/ChooseTabsFragment.java

@@ -34,6 +34,7 @@ import org.schabi.newpipe.error.UserAction;
 import org.schabi.newpipe.settings.SelectChannelFragment;
 import org.schabi.newpipe.settings.SelectKioskFragment;
 import org.schabi.newpipe.settings.SelectPlaylistFragment;
+import org.schabi.newpipe.settings.SelectFeedGroupFragment;
 import org.schabi.newpipe.settings.tabs.AddTabDialog.ChooseTabListItem;
 import org.schabi.newpipe.util.ThemeHelper;
 
@@ -203,6 +204,14 @@ public class ChooseTabsFragment extends Fragment {
                         });
                 selectPlaylistFragment.show(getParentFragmentManager(), "select_playlist");
                 return;
+            case FEEDGROUP:
+                final SelectFeedGroupFragment selectFeedGroupFragment =
+                        new SelectFeedGroupFragment();
+                selectFeedGroupFragment.setOnSelectedListener(
+                        (groupId, name, iconId) ->
+                                addTab(new Tab.FeedGroupTab(groupId, name, iconId)));
+                selectFeedGroupFragment.show(getParentFragmentManager(), "select_feed_group");
+                return;
             default:
                 addTab(type.getTab());
                 break;
@@ -244,6 +253,11 @@ public class ChooseTabsFragment extends Fragment {
                             getString(R.string.playlist_page_summary),
                             tab.getTabIconRes(context)));
                     break;
+                case FEEDGROUP:
+                    returnList.add(new ChooseTabListItem(tab.getTabId(),
+                            getString(R.string.feed_group_page_summary),
+                            tab.getTabIconRes(context)));
+                    break;
                 default:
                     if (!tabList.contains(tab)) {
                         returnList.add(new ChooseTabListItem(context, tab));
@@ -396,6 +410,9 @@ public class ChooseTabsFragment extends Fragment {
                                 ? getString(R.string.local)
                                 : getNameOfServiceById(serviceId);
                         return serviceName + "/" + tab.getTabName(requireContext());
+                    case FEEDGROUP:
+                        return getString(R.string.feed_groups_header_title)
+                                + "/" + ((Tab.FeedGroupTab) tab).getFeedGroupName();
                     default:
                         return tab.getTabName(requireContext());
                 }

app/src/main/java/org/schabi/newpipe/settings/tabs/Tab.java

@@ -93,6 +93,8 @@ public abstract class Tab {
                     return new ChannelTab(jsonObject);
                 case PLAYLIST:
                     return new PlaylistTab(jsonObject);
+                case FEEDGROUP:
+                    return new FeedGroupTab(jsonObject);
             }
         }
 
@@ -162,7 +164,8 @@ public abstract class Tab {
         HISTORY(new HistoryTab()),
         KIOSK(new KioskTab()),
         CHANNEL(new ChannelTab()),
-        PLAYLIST(new PlaylistTab());
+        PLAYLIST(new PlaylistTab()),
+        FEEDGROUP(new FeedGroupTab());
 
         private final Tab tab;
 
@@ -458,7 +461,7 @@ public abstract class Tab {
             final ChannelTab other = (ChannelTab) obj;
             return super.equals(obj)
                     && channelServiceId == other.channelServiceId
-                    && channelUrl.equals(other.channelName)
+                    && channelUrl.equals(other.channelUrl)
                     && channelName.equals(other.channelName);
         }
 
@@ -652,4 +655,93 @@ public abstract class Tab {
             return playlistType;
         }
     }
+    public static class FeedGroupTab extends Tab {
+        public static final int ID = 9;
+        private static final String JSON_FEED_GROUP_ID_KEY = "feed_group_id";
+        private static final String JSON_FEED_GROUP_NAME_KEY = "feed_group_name";
+        private static final String JSON_FEED_GROUP_ICON_KEY = "feed_group_icon";
+        private Long feedGroupId;
+        private String feedGroupName;
+        private int iconId;
+
+        private FeedGroupTab() {
+            this((long) -1, NO_NAME, R.drawable.ic_asterisk);
+        }
+
+        public FeedGroupTab(final Long feedGroupId, final String feedGroupName,
+                               final int iconId) {
+            this.feedGroupId = feedGroupId;
+            this.feedGroupName = feedGroupName;
+            this.iconId = iconId;
+
+        }
+
+        public FeedGroupTab(final JsonObject jsonObject) {
+            super(jsonObject);
+        }
+
+        @Override
+        public int getTabId() {
+            return ID;
+        }
+
+        @Override
+        public String getTabName(final Context context) {
+            return context.getString(R.string.fragment_feed_title);
+        }
+
+        @DrawableRes
+        @Override
+        public int getTabIconRes(final Context context) {
+            return this.iconId;
+        }
+
+        @Override
+        public FeedFragment getFragment(final Context context) {
+            return FeedFragment.newInstance(feedGroupId, feedGroupName);
+        }
+
+        @Override
+        protected void writeDataToJson(final JsonStringWriter writerSink) {
+            writerSink.value(JSON_FEED_GROUP_ID_KEY, feedGroupId)
+                    .value(JSON_FEED_GROUP_NAME_KEY, feedGroupName)
+                    .value(JSON_FEED_GROUP_ICON_KEY, iconId);
+        }
+
+        @Override
+        protected void readDataFromJson(final JsonObject jsonObject) {
+            feedGroupId = jsonObject.getLong(JSON_FEED_GROUP_ID_KEY, -1);
+            feedGroupName = jsonObject.getString(JSON_FEED_GROUP_NAME_KEY, NO_NAME);
+            iconId = jsonObject.getInt(JSON_FEED_GROUP_ICON_KEY, R.drawable.ic_asterisk);
+        }
+
+        @Override
+        public boolean equals(final Object obj) {
+            if (!(obj instanceof FeedGroupTab)) {
+                return false;
+            }
+            final FeedGroupTab other = (FeedGroupTab) obj;
+            return super.equals(obj)
+                    && feedGroupId.equals(other.feedGroupId)
+                    && feedGroupName.equals(other.feedGroupName)
+                    && iconId == other.iconId;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(getTabId(), feedGroupId, feedGroupName, iconId);
+        }
+
+        public Long getFeedGroupId() {
+            return feedGroupId;
+        }
+
+        public String getFeedGroupName() {
+            return feedGroupName;
+        }
+
+        public int getIconId() {
+            return iconId;
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/streams/SrtFromTtmlWriter.java

@@ -24,7 +24,11 @@ public class SrtFromTtmlWriter {
     private final boolean ignoreEmptyFrames;
     private final Charset charset = StandardCharsets.UTF_8;
 
-    private int frameIndex = 0;
+    // According to the SubRip (.srt) specification, subtitle
+    // numbering must start from 1.
+    // Some players accept 0 or even negative indices,
+    // but to ensure compliance we start at 1.
+    private int frameIndex = 1;
 
     public SrtFromTtmlWriter(final SharpStream out, final boolean ignoreEmptyFrames) {
         this.out = out;
@@ -39,7 +43,8 @@ public class SrtFromTtmlWriter {
 
     private void writeFrame(final String begin, final String end, final StringBuilder text)
             throws IOException {
-        writeString(String.valueOf(frameIndex++));
+        writeString(String.valueOf(frameIndex));
+        frameIndex += 1;
         writeString(NEW_LINE);
         writeString(begin);
         writeString(" --> ");

app/src/main/java/org/schabi/newpipe/util/ChannelTabHelper.java

@@ -24,6 +24,7 @@ public final class ChannelTabHelper {
         switch (tab) {
             case ChannelTabs.VIDEOS:
             case ChannelTabs.TRACKS:
+            case ChannelTabs.LIKES:
             case ChannelTabs.SHORTS:
             case ChannelTabs.LIVESTREAMS:
                 return true;
@@ -62,6 +63,8 @@ public final class ChannelTabHelper {
                 return R.string.show_channel_tabs_playlists;
             case ChannelTabs.ALBUMS:
                 return R.string.show_channel_tabs_albums;
+            case ChannelTabs.LIKES:
+                return R.string.show_channel_tabs_likes;
             default:
                 return -1;
         }
@@ -78,6 +81,8 @@ public final class ChannelTabHelper {
                 return R.string.fetch_channel_tabs_shorts;
             case ChannelTabs.LIVESTREAMS:
                 return R.string.fetch_channel_tabs_livestreams;
+            case ChannelTabs.LIKES:
+                return R.string.fetch_channel_tabs_likes;
             default:
                 return -1;
         }
@@ -100,6 +105,8 @@ public final class ChannelTabHelper {
                 return R.string.channel_tab_playlists;
             case ChannelTabs.ALBUMS:
                 return R.string.channel_tab_albums;
+            case ChannelTabs.LIKES:
+                return R.string.channel_tab_likes;
             default:
                 return R.string.unknown_content;
         }

app/src/main/java/org/schabi/newpipe/util/DeviceUtils.java

@@ -17,6 +17,7 @@ import android.view.InputDevice;
 import android.view.KeyEvent;
 import android.view.WindowInsets;
 import android.view.WindowManager;
+import android.webkit.CookieManager;
 
 import androidx.annotation.Dimension;
 import androidx.annotation.NonNull;
@@ -335,4 +336,17 @@ public final class DeviceUtils {
                 && !TX_50JXW834
                 && !HMB9213NW;
     }
+
+    /**
+     * @return whether the device has support for WebView, see
+     * <a href="https://stackoverflow.com/a/69626735">https://stackoverflow.com/a/69626735</a>
+     */
+    public static boolean supportsWebView() {
+        try {
+            CookieManager.getInstance();
+            return true;
+        } catch (final Throwable ignored) {
+            return false;
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/util/KioskTranslator.java

@@ -52,6 +52,14 @@ public final class KioskTranslator {
                 return c.getString(R.string.featured);
             case "Radio":
                 return c.getString(R.string.radio);
+            case "trending_gaming":
+                return c.getString(R.string.trending_gaming);
+            case "trending_music":
+                return c.getString(R.string.trending_music);
+            case "trending_movies_and_shows":
+                return c.getString(R.string.trending_movies);
+            case "trending_podcasts_episodes":
+                return c.getString(R.string.trending_podcasts);
             default:
                 return kioskId;
         }
@@ -77,6 +85,14 @@ public final class KioskTranslator {
                 return R.drawable.ic_stars;
             case "Radio":
                 return R.drawable.ic_radio;
+            case "trending_gaming":
+                return R.drawable.ic_videogame_asset;
+            case "trending_music":
+                return R.drawable.ic_music_note;
+            case "trending_movies_and_shows":
+                return R.drawable.ic_movie;
+            case "trending_podcasts_episodes":
+                return R.drawable.ic_podcasts;
             default:
                 return 0;
         }

app/src/main/java/org/schabi/newpipe/util/ListHelper.java

@@ -322,7 +322,7 @@ public final class ListHelper {
         }
 
         // Sort collected streams by name
-        return collectedStreams.values().stream().sorted(getAudioTrackNameComparator(context))
+        return collectedStreams.values().stream().sorted(getAudioTrackNameComparator())
                 .collect(Collectors.toList());
     }
 
@@ -359,7 +359,7 @@ public final class ListHelper {
         }
 
         // Sort tracks alphabetically, sort track streams by quality
-        final Comparator<AudioStream> nameCmp = getAudioTrackNameComparator(context);
+        final Comparator<AudioStream> nameCmp = getAudioTrackNameComparator();
         final Comparator<AudioStream> formatCmp = getAudioFormatComparator(context);
 
         return collectedStreams.values().stream()
@@ -867,12 +867,10 @@ public final class ListHelper {
      * Get a {@link Comparator} to compare {@link AudioStream}s by their languages and track types
      * for alphabetical sorting.
      *
-     * @param context app context for localization
      * @return Comparator
      */
-    private static Comparator<AudioStream> getAudioTrackNameComparator(
-            @NonNull final Context context) {
-        final Locale appLoc = Localization.getAppLocale(context);
+    private static Comparator<AudioStream> getAudioTrackNameComparator() {
+        final Locale appLoc = Localization.getAppLocale();
 
         return Comparator.comparing(AudioStream::getAudioLocale, Comparator.nullsLast(
                         Comparator.comparing(locale -> locale.getDisplayName(appLoc))))

app/src/main/java/org/schabi/newpipe/util/Localization.java

@@ -5,19 +5,21 @@ import static org.schabi.newpipe.MainActivity.DEBUG;
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.SharedPreferences;
-import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.icu.text.CompactDecimalFormat;
 import android.os.Build;
+import android.text.BidiFormatter;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
-import android.util.DisplayMetrics;
+import android.util.Log;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.PluralsRes;
 import androidx.annotation.StringRes;
+import androidx.appcompat.app.AppCompatDelegate;
 import androidx.core.math.MathUtils;
+import androidx.core.os.LocaleListCompat;
 import androidx.preference.PreferenceManager;
 
 import org.ocpsoft.prettytime.PrettyTime;
@@ -63,6 +65,7 @@ import java.util.stream.Collectors;
  */
 
 public final class Localization {
+    private static final String TAG = Localization.class.toString();
     public static final String DOT_SEPARATOR = " • ";
     private static PrettyTime prettyTime;
 
@@ -80,6 +83,20 @@ public final class Localization {
                 .collect(Collectors.joining(delimiter));
     }
 
+    /**
+     * Localize a user name like <code>@foobar</code>.
+     *
+     * Will correctly handle right-to-left usernames by using a {@link BidiFormatter}.
+     * For right-to-left usernames, it will put the @ on the right side to read more naturally.
+     *
+     * @param plainName username, with an optional leading <code>@</code>
+     * @return a usernames that can include RTL-characters
+     */
+    @NonNull
+    public static String localizeUserName(final String plainName) {
+        return BidiFormatter.getInstance().unicodeWrap(plainName);
+    }
+
     public static org.schabi.newpipe.extractor.localization.Localization getPreferredLocalization(
             final Context context) {
         return org.schabi.newpipe.extractor.localization.Localization
@@ -100,35 +117,34 @@ public final class Localization {
         return getLocaleFromPrefs(context, R.string.content_language_key);
     }
 
-    public static Locale getAppLocale(@NonNull final Context context) {
-        return getLocaleFromPrefs(context, R.string.app_language_key);
+    public static Locale getAppLocale() {
+        final Locale customLocale = AppCompatDelegate.getApplicationLocales().get(0);
+        return customLocale != null ? customLocale : Locale.getDefault();
     }
 
-    public static String localizeNumber(@NonNull final Context context, final long number) {
-        return localizeNumber(context, (double) number);
+    public static String localizeNumber(final long number) {
+        return localizeNumber((double) number);
     }
 
-    public static String localizeNumber(@NonNull final Context context, final double number) {
-        final NumberFormat nf = NumberFormat.getInstance(getAppLocale(context));
-        return nf.format(number);
+    public static String localizeNumber(final double number) {
+        return NumberFormat.getInstance(getAppLocale()).format(number);
     }
 
-    public static String formatDate(@NonNull final Context context,
-                                    @NonNull final OffsetDateTime offsetDateTime) {
+    public static String formatDate(@NonNull final OffsetDateTime offsetDateTime) {
         return DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM)
-                .withLocale(getAppLocale(context)).format(offsetDateTime
-                        .atZoneSameInstant(ZoneId.systemDefault()));
+            .withLocale(getAppLocale())
+            .format(offsetDateTime.atZoneSameInstant(ZoneId.systemDefault()));
     }
 
     @SuppressLint("StringFormatInvalid")
     public static String localizeUploadDate(@NonNull final Context context,
                                             @NonNull final OffsetDateTime offsetDateTime) {
-        return context.getString(R.string.upload_date_text, formatDate(context, offsetDateTime));
+        return context.getString(R.string.upload_date_text, formatDate(offsetDateTime));
     }
 
     public static String localizeViewCount(@NonNull final Context context, final long viewCount) {
         return getQuantity(context, R.plurals.views, R.string.no_views, viewCount,
-                localizeNumber(context, viewCount));
+                localizeNumber(viewCount));
     }
 
     public static String localizeStreamCount(@NonNull final Context context,
@@ -142,7 +158,7 @@ public final class Localization {
                 return context.getResources().getString(R.string.more_than_100_videos);
             default:
                 return getQuantity(context, R.plurals.videos, R.string.no_videos, streamCount,
-                        localizeNumber(context, streamCount));
+                        localizeNumber(streamCount));
         }
     }
 
@@ -163,27 +179,33 @@ public final class Localization {
     public static String localizeWatchingCount(@NonNull final Context context,
                                                final long watchingCount) {
         return getQuantity(context, R.plurals.watching, R.string.no_one_watching, watchingCount,
-                localizeNumber(context, watchingCount));
+                localizeNumber(watchingCount));
     }
 
     public static String shortCount(@NonNull final Context context, final long count) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-            return CompactDecimalFormat.getInstance(getAppLocale(context),
+            return CompactDecimalFormat.getInstance(getAppLocale(),
                     CompactDecimalFormat.CompactStyle.SHORT).format(count);
         }
 
         final double value = (double) count;
         if (count >= 1000000000) {
-            return localizeNumber(context, round(value / 1000000000))
-                    + context.getString(R.string.short_billion);
+            final double shortenedValue = value / 1000000000;
+            final int scale = shortenedValue >= 100 ? 0 : 1;
+            return context.getString(R.string.short_billion,
+                    localizeNumber(round(shortenedValue, scale)));
         } else if (count >= 1000000) {
-            return localizeNumber(context, round(value / 1000000))
-                    + context.getString(R.string.short_million);
+            final double shortenedValue = value / 1000000;
+            final int scale = shortenedValue >= 100 ? 0 : 1;
+            return context.getString(R.string.short_million,
+                    localizeNumber(round(shortenedValue, scale)));
         } else if (count >= 1000) {
-            return localizeNumber(context, round(value / 1000))
-                    + context.getString(R.string.short_thousand);
+            final double shortenedValue = value / 1000;
+            final int scale = shortenedValue >= 100 ? 0 : 1;
+            return context.getString(R.string.short_thousand,
+                    localizeNumber(round(shortenedValue, scale)));
         } else {
-            return localizeNumber(context, value);
+            return localizeNumber(value);
         }
     }
 
@@ -308,7 +330,7 @@ public final class Localization {
      * <ul>
      *     <li>English (original)</li>
      *     <li>English (descriptive)</li>
-     *     <li>Spanish (dubbed)</li>
+     *     <li>Spanish (Spain) (dubbed)</li>
      * </ul>
      *
      * @param context the context used to get the app language
@@ -318,7 +340,7 @@ public final class Localization {
     public static String audioTrackName(@NonNull final Context context, final AudioStream track) {
         final String name;
         if (track.getAudioLocale() != null) {
-            name = track.getAudioLocale().getDisplayLanguage(getAppLocale(context));
+            name = track.getAudioLocale().getDisplayName();
         } else if (track.getAudioTrackName() != null) {
             name = track.getAudioTrackName();
         } else {
@@ -353,8 +375,8 @@ public final class Localization {
         prettyTime.removeUnit(Decade.class);
     }
 
-    public static PrettyTime resolvePrettyTime(@NonNull final Context context) {
-        return new PrettyTime(getAppLocale(context));
+    public static PrettyTime resolvePrettyTime() {
+        return new PrettyTime(getAppLocale());
     }
 
     public static String relativeTime(@NonNull final OffsetDateTime offsetDateTime) {
@@ -372,9 +394,10 @@ public final class Localization {
      *         {@code parsed != null} and the relevant setting is enabled, {@code textual} will
      *         be appended to the returned string for debugging purposes.
      */
+    @Nullable
     public static String relativeTimeOrTextual(@Nullable final Context context,
                                                @Nullable final DateWrapper parsed,
-                                               final String textual) {
+                                               @Nullable final String textual) {
         if (parsed == null) {
             return textual;
         } else if (DEBUG && context != null && PreferenceManager
@@ -386,14 +409,6 @@ public final class Localization {
         }
     }
 
-    public static void assureCorrectAppLanguage(final Context c) {
-        final Resources res = c.getResources();
-        final DisplayMetrics dm = res.getDisplayMetrics();
-        final Configuration conf = res.getConfiguration();
-        conf.setLocale(getAppLocale(c));
-        res.updateConfiguration(conf, dm);
-    }
-
     private static Locale getLocaleFromPrefs(@NonNull final Context context,
                                              @StringRes final int prefKey) {
         final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
@@ -407,8 +422,8 @@ public final class Localization {
         }
     }
 
-    private static double round(final double value) {
-        return new BigDecimal(value).setScale(1, RoundingMode.HALF_UP).doubleValue();
+    private static double round(final double value, final int scale) {
+        return new BigDecimal(value).setScale(scale, RoundingMode.HALF_UP).doubleValue();
     }
 
     private static String getQuantity(@NonNull final Context context,
@@ -427,4 +442,35 @@ public final class Localization {
         final int safeCount = (int) MathUtils.clamp(count, Integer.MIN_VALUE, Integer.MAX_VALUE);
         return context.getResources().getQuantityString(pluralId, safeCount, formattedCount);
     }
+
+    // Starting with pull request #12093, NewPipe exclusively uses Android's
+    // public per-app language APIs to read and set the UI language for NewPipe.
+    // The following code will migrate any existing custom app language in SharedPreferences to
+    // use the public per-app language APIs instead.
+    // For reference, see
+    // https://android-developers.googleblog.com/2022/11/per-app-language-preferences-part-1.html
+    public static void migrateAppLanguageSettingIfNecessary(@NonNull final Context context) {
+        final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
+        final String appLanguageKey = context.getString(R.string.app_language_key);
+        final String appLanguageValue = sp.getString(appLanguageKey, null);
+        if (appLanguageValue != null) {
+            // The app language key is used on Android versions < 33
+            // for more info, see ContentSettingsFragment
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                sp.edit().remove(appLanguageKey).apply();
+            }
+            final String appLanguageDefaultValue =
+                    context.getString(R.string.default_localization_key);
+            if (!appLanguageValue.equals(appLanguageDefaultValue)) {
+                try {
+                    AppCompatDelegate.setApplicationLocales(
+                        LocaleListCompat.forLanguageTags(appLanguageValue));
+                } catch (final RuntimeException e) {
+                    Log.e(TAG, "Failed to migrate previous custom app language "
+                            + "setting to public per-app language APIs"
+                    );
+                }
+            }
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/util/NavigationHelper.java

@@ -57,8 +57,10 @@ import org.schabi.newpipe.local.subscription.SubscriptionFragment;
 import org.schabi.newpipe.local.subscription.SubscriptionsImportFragment;
 import org.schabi.newpipe.player.PlayQueueActivity;
 import org.schabi.newpipe.player.Player;
+import org.schabi.newpipe.player.PlayerIntentType;
 import org.schabi.newpipe.player.PlayerService;
 import org.schabi.newpipe.player.PlayerType;
+import org.schabi.newpipe.player.TimestampChangeData;
 import org.schabi.newpipe.player.helper.PlayerHelper;
 import org.schabi.newpipe.player.helper.PlayerHolder;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
@@ -67,6 +69,7 @@ import org.schabi.newpipe.settings.SettingsActivity;
 import org.schabi.newpipe.util.external_communication.ShareUtils;
 
 import java.util.List;
+import java.util.Optional;
 
 public final class NavigationHelper {
     public static final String MAIN_FRAGMENT_TAG = "main_fragment_tag";
@@ -85,53 +88,32 @@ public final class NavigationHelper {
     public static <T> Intent getPlayerIntent(@NonNull final Context context,
                                              @NonNull final Class<T> targetClazz,
                                              @Nullable final PlayQueue playQueue,
-                                             final boolean resumePlayback) {
-        final Intent intent = new Intent(context, targetClazz);
-
-        if (playQueue != null) {
-            final String cacheKey = SerializedCache.getInstance().put(playQueue, PlayQueue.class);
-            if (cacheKey != null) {
-                intent.putExtra(Player.PLAY_QUEUE_KEY, cacheKey);
-            }
-        }
-        intent.putExtra(Player.PLAYER_TYPE, PlayerType.MAIN.valueForIntent());
-        intent.putExtra(Player.RESUME_PLAYBACK, resumePlayback);
-
-        return intent;
+                                             @NonNull final PlayerIntentType playerIntentType) {
+        final String cacheKey = Optional.ofNullable(playQueue)
+                .map(queue -> SerializedCache.getInstance().put(queue, PlayQueue.class))
+                .orElse(null);
+        return new Intent(context, targetClazz)
+                .putExtra(Player.PLAY_QUEUE_KEY, cacheKey)
+                .putExtra(Player.PLAYER_TYPE, PlayerType.MAIN)
+                .putExtra(PlayerService.SHOULD_START_FOREGROUND_EXTRA, true)
+                .putExtra(Player.PLAYER_INTENT_TYPE, playerIntentType);
     }
 
     @NonNull
-    public static <T> Intent getPlayerIntent(@NonNull final Context context,
-                                             @NonNull final Class<T> targetClazz,
-                                             @Nullable final PlayQueue playQueue,
-                                             final boolean resumePlayback,
-                                             final boolean playWhenReady) {
-        return getPlayerIntent(context, targetClazz, playQueue, resumePlayback)
-                .putExtra(Player.PLAY_WHEN_READY, playWhenReady);
-    }
-
-    @NonNull
-    public static <T> Intent getPlayerEnqueueIntent(@NonNull final Context context,
-                                                    @NonNull final Class<T> targetClazz,
-                                                    @Nullable final PlayQueue playQueue) {
-        // when enqueueing `resumePlayback` is always `false` since:
-        // - if there is a video already playing, the value of `resumePlayback` just doesn't make
-        //   any difference.
-        // - if there is nothing already playing, it is useful for the enqueue action to have a
-        //   slightly different behaviour than the normal play action: the latter resumes playback,
-        //   the former doesn't. (note that enqueue can be triggered when nothing is playing only
-        //   by long pressing the video detail fragment, playlist or channel controls
-        return getPlayerIntent(context, targetClazz, playQueue, false)
-                .putExtra(Player.ENQUEUE, true);
+    public static Intent getPlayerTimestampIntent(@NonNull final Context context,
+                                                  @NonNull final TimestampChangeData data) {
+        return new Intent(context, PlayerService.class)
+                .putExtra(Player.PLAYER_INTENT_TYPE, PlayerIntentType.TimestampChange)
+                .putExtra(Player.PLAYER_INTENT_DATA, data);
     }
 
     @NonNull
     public static <T> Intent getPlayerEnqueueNextIntent(@NonNull final Context context,
                                                         @NonNull final Class<T> targetClazz,
                                                         @Nullable final PlayQueue playQueue) {
-        // see comment in `getPlayerEnqueueIntent` as to why `resumePlayback` is false
-        return getPlayerIntent(context, targetClazz, playQueue, false)
-                .putExtra(Player.ENQUEUE_NEXT, true);
+        return getPlayerIntent(context, targetClazz, playQueue, PlayerIntentType.EnqueueNext)
+                // see comment in `getPlayerEnqueueIntent` as to why `resumePlayback` is false
+                .putExtra(Player.RESUME_PLAYBACK, false);
     }
 
     /* PLAY */
@@ -165,8 +147,10 @@ public final class NavigationHelper {
 
         Toast.makeText(context, R.string.popup_playing_toast, Toast.LENGTH_SHORT).show();
 
-        final Intent intent = getPlayerIntent(context, PlayerService.class, queue, resumePlayback);
-        intent.putExtra(Player.PLAYER_TYPE, PlayerType.POPUP.valueForIntent());
+        final var intent = getPlayerIntent(context, PlayerService.class, queue,
+                PlayerIntentType.AllOthers)
+                .putExtra(Player.PLAYER_TYPE, PlayerType.POPUP)
+                .putExtra(Player.RESUME_PLAYBACK, resumePlayback);
         ContextCompat.startForegroundService(context, intent);
     }
 
@@ -176,8 +160,10 @@ public final class NavigationHelper {
         Toast.makeText(context, R.string.background_player_playing_toast, Toast.LENGTH_SHORT)
                 .show();
 
-        final Intent intent = getPlayerIntent(context, PlayerService.class, queue, resumePlayback);
-        intent.putExtra(Player.PLAYER_TYPE, PlayerType.AUDIO.valueForIntent());
+        final Intent intent = getPlayerIntent(context, PlayerService.class, queue,
+                PlayerIntentType.AllOthers)
+                .putExtra(Player.PLAYER_TYPE, PlayerType.AUDIO)
+                .putExtra(Player.RESUME_PLAYBACK, resumePlayback);
         ContextCompat.startForegroundService(context, intent);
     }
 
@@ -190,9 +176,18 @@ public final class NavigationHelper {
         }
 
         Toast.makeText(context, R.string.enqueued, Toast.LENGTH_SHORT).show();
-        final Intent intent = getPlayerEnqueueIntent(context, PlayerService.class, queue);
 
-        intent.putExtra(Player.PLAYER_TYPE, playerType.valueForIntent());
+        // when enqueueing `resumePlayback` is always `false` since:
+        // - if there is a video already playing, the value of `resumePlayback` just doesn't make
+        //   any difference.
+        // - if there is nothing already playing, it is useful for the enqueue action to have a
+        //   slightly different behaviour than the normal play action: the latter resumes playback,
+        //   the former doesn't. (note that enqueue can be triggered when nothing is playing only
+        //   by long pressing the video detail fragment, playlist or channel controls
+        final Intent intent = getPlayerIntent(context, PlayerService.class, queue,
+                PlayerIntentType.Enqueue)
+                .putExtra(Player.RESUME_PLAYBACK, false)
+                .putExtra(Player.PLAYER_TYPE, playerType);
         ContextCompat.startForegroundService(context, intent);
     }
 
@@ -214,9 +209,8 @@ public final class NavigationHelper {
             playerType = PlayerType.AUDIO;
         }
         Toast.makeText(context, R.string.enqueued_next, Toast.LENGTH_SHORT).show();
-        final Intent intent = getPlayerEnqueueNextIntent(context, PlayerService.class, queue);
-
-        intent.putExtra(Player.PLAYER_TYPE, playerType.valueForIntent());
+        final Intent intent = getPlayerEnqueueNextIntent(context, PlayerService.class, queue)
+                .putExtra(Player.PLAYER_TYPE, playerType);
         ContextCompat.startForegroundService(context, intent);
     }
 
@@ -452,8 +446,12 @@ public final class NavigationHelper {
         if (fragment instanceof VideoDetailFragment && fragment.isVisible()) {
             onVideoDetailFragmentReady.run((VideoDetailFragment) fragment);
         } else {
+            // Specify no url here, otherwise the VideoDetailFragment will start loading the
+            // stream automatically if it's the first time it is being opened, but then
+            // onVideoDetailFragmentReady will kick in and start another loading process.
+            // See VideoDetailFragment.wasCleared() and its usage in doInitialLoadLogic().
             final VideoDetailFragment instance = VideoDetailFragment
-                    .getInstance(serviceId, url, title, playQueue);
+                    .getInstance(serviceId, null, title, playQueue);
             instance.setAutoPlay(autoPlay);
 
             defaultTransaction(fragmentManager)

app/src/main/java/org/schabi/newpipe/util/PermissionHelper.java

@@ -9,9 +9,11 @@ import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.provider.Settings;
+import android.text.Html;
 import android.widget.Toast;
 
 import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AlertDialog;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
 
@@ -113,14 +115,47 @@ public final class PermissionHelper {
     @RequiresApi(api = Build.VERSION_CODES.M)
     public static boolean checkSystemAlertWindowPermission(final Context context) {
         if (!Settings.canDrawOverlays(context)) {
-            final Intent i = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
-                    Uri.parse("package:" + context.getPackageName()));
-            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-            try {
-                context.startActivity(i);
-            } catch (final ActivityNotFoundException ignored) {
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
+                final Intent i = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
+                        Uri.parse("package:" + context.getPackageName()));
+                i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                try {
+                    context.startActivity(i);
+                } catch (final ActivityNotFoundException ignored) {
+                }
+                return false;
+            // from Android R the ACTION_MANAGE_OVERLAY_PERMISSION will only point to the menu,
+            // so let’s add a dialog that points the user to the right setting.
+            } else {
+                final String appName = context.getApplicationInfo()
+                        .loadLabel(context.getPackageManager()).toString();
+                final String title = context.getString(R.string.permission_display_over_apps);
+                final String permissionName =
+                        context.getString(R.string.permission_display_over_apps_permission_name);
+                final String appNameItalic = "<i>" + appName + "</i>";
+                final String permissionNameItalic = "<i>" + permissionName + "</i>";
+                final String message =
+                        context.getString(R.string.permission_display_over_apps_message,
+                                appNameItalic,
+                                permissionNameItalic
+                        );
+                new AlertDialog.Builder(context)
+                        .setTitle(title)
+                        .setMessage(Html.fromHtml(message, Html.FROM_HTML_MODE_COMPACT))
+                        .setPositiveButton("OK", (dialog, which) -> {
+                            // we don’t need the package name here, since it won’t do anything on >R
+                            final Intent intent =
+                                    new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
+                            try {
+                                context.startActivity(intent);
+                            } catch (final ActivityNotFoundException ignored) {
+                            }
+                        })
+                        .setCancelable(true)
+                        .show();
+                return false;
             }
-            return false;
+
         } else {
             return true;
         }

app/src/main/java/org/schabi/newpipe/util/SparseItemUtil.java

@@ -121,7 +121,7 @@ public final class SparseItemUtil {
                     callback.accept(result);
                 }, throwable -> ErrorUtil.createNotification(context,
                         new ErrorInfo(throwable, UserAction.REQUESTED_STREAM,
-                                "Loading stream info: " + url, serviceId)
+                                "Loading stream info: " + url, serviceId, url)
                 ));
     }
 }

app/src/main/java/org/schabi/newpipe/util/external_communication/ShareUtils.java

@@ -5,10 +5,9 @@ import static org.schabi.newpipe.MainActivity.DEBUG;
 import android.content.ActivityNotFoundException;
 import android.content.ClipData;
 import android.content.ClipboardManager;
+import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Build;
@@ -23,6 +22,7 @@ import androidx.core.content.FileProvider;
 
 import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.RouterActivity;
 import org.schabi.newpipe.extractor.Image;
 import org.schabi.newpipe.util.image.ImageStrategy;
 import org.schabi.newpipe.util.image.PicassoHelper;
@@ -62,8 +62,9 @@ public final class ShareUtils {
     }
 
     /**
-     * Open the url with the system default browser. If no browser is set as default, falls back to
-     * {@link #openAppChooser(Context, Intent, boolean)}.
+     * Open the url with the system default browser. If no browser is installed, falls back to
+     * {@link #openAppChooser(Context, Intent, boolean)} (for displaying that no apps are available
+     * to handle the action, or possible OEM-related edge cases).
      * <p>
      * This function selects the package to open based on which apps respond to the {@code http://}
      * schema alone, which should exclude special non-browser apps that are can handle the url (e.g.
@@ -77,44 +78,26 @@ public final class ShareUtils {
      * @param url     the url to browse
      **/
     public static void openUrlInBrowser(@NonNull final Context context, final String url) {
-        // Resolve using a generic http://, so we are sure to get a browser and not e.g. the yt app.
+        // Target a generic http://, so we are sure to get a browser and not e.g. the yt app.
         // Note that this requires the `http` schema to be added to `<queries>` in the manifest.
-        final ResolveInfo defaultBrowserInfo;
         final Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://"));
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-            defaultBrowserInfo = context.getPackageManager().resolveActivity(browserIntent,
-                    PackageManager.ResolveInfoFlags.of(PackageManager.MATCH_DEFAULT_ONLY));
-        } else {
-            defaultBrowserInfo = context.getPackageManager().resolveActivity(browserIntent,
-                    PackageManager.MATCH_DEFAULT_ONLY);
-        }
 
         final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url))
                 .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 
-        if (defaultBrowserInfo == null) {
-            // No app installed to open a web URL, but it may be handled by other apps so try
-            // opening a system chooser for the link in this case (it could be bypassed by the
-            // system if there is only one app which can open the link or a default app associated
-            // with the link domain on Android 12 and higher)
+        // See https://stackoverflow.com/a/58801285 and `setSelector` documentation
+        intent.setSelector(browserIntent);
+        try {
+            context.startActivity(intent);
+        } catch (final ActivityNotFoundException e) {
+            // No browser is available. This should, in the end, yield a nice AOSP error message
+            // indicating that no app is available to handle this action.
+            //
+            // Note: there are some situations where modified OEM ROMs have apps that appear
+            // to be browsers but are actually app choosers. If starting the Activity fails
+            // related to this, opening the system app chooser is still the correct behavior.
+            intent.setSelector(null);
             openAppChooser(context, intent, true);
-            return;
-        }
-
-        final String defaultBrowserPackage = defaultBrowserInfo.activityInfo.packageName;
-
-        if (defaultBrowserPackage.equals("android")) {
-            // No browser set as default (doesn't work on some devices)
-            openAppChooser(context, intent, true);
-        } else {
-            try {
-                intent.setPackage(defaultBrowserPackage);
-                context.startActivity(intent);
-            } catch (final ActivityNotFoundException e) {
-                // Not a browser but an app chooser because of OEMs changes
-                intent.setPackage(null);
-                openAppChooser(context, intent, true);
-            }
         }
     }
 
@@ -190,6 +173,18 @@ public final class ShareUtils {
             chooserIntent.putExtra(Intent.EXTRA_TITLE, context.getString(R.string.open_with));
         }
 
+        // Avoid opening in NewPipe
+        // (Implementation note: if the URL is one for which NewPipe itself
+        // is set as handler on Android >= 12, we actually remove the only eligible app
+        // for this link, and browsers will not be offered to the user. For that, use
+        // `openUrlInBrowser`.)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            chooserIntent.putExtra(
+                    Intent.EXTRA_EXCLUDE_COMPONENTS,
+                    new ComponentName[]{new ComponentName(context, RouterActivity.class)}
+            );
+        }
+
         // Migrate any clip data and flags from the original intent.
         final int permFlags = intent.getFlags() & (Intent.FLAG_GRANT_READ_URI_PERMISSION
                 | Intent.FLAG_GRANT_WRITE_URI_PERMISSION

app/src/main/java/org/schabi/newpipe/util/potoken/JavaScriptUtil.kt

@@ -0,0 +1,113 @@
+package org.schabi.newpipe.util.potoken
+
+import com.grack.nanojson.JsonObject
+import com.grack.nanojson.JsonParser
+import com.grack.nanojson.JsonWriter
+import okio.ByteString.Companion.decodeBase64
+import okio.ByteString.Companion.toByteString
+
+/**
+ * Parses the raw challenge data obtained from the Create endpoint and returns an object that can be
+ * embedded in a JavaScript snippet.
+ */
+fun parseChallengeData(rawChallengeData: String): String {
+    val scrambled = JsonParser.array().from(rawChallengeData)
+
+    val challengeData = if (scrambled.size > 1 && scrambled.isString(1)) {
+        val descrambled = descramble(scrambled.getString(1))
+        JsonParser.array().from(descrambled)
+    } else {
+        scrambled.getArray(0)
+    }
+
+    val messageId = challengeData.getString(0)
+    val interpreterHash = challengeData.getString(3)
+    val program = challengeData.getString(4)
+    val globalName = challengeData.getString(5)
+    val clientExperimentsStateBlob = challengeData.getString(7)
+
+    val privateDoNotAccessOrElseSafeScriptWrappedValue = challengeData.getArray(1, null)?.find { it is String }
+    val privateDoNotAccessOrElseTrustedResourceUrlWrappedValue = challengeData.getArray(2, null)?.find { it is String }
+
+    return JsonWriter.string(
+        JsonObject.builder()
+            .value("messageId", messageId)
+            .`object`("interpreterJavascript")
+            .value("privateDoNotAccessOrElseSafeScriptWrappedValue", privateDoNotAccessOrElseSafeScriptWrappedValue)
+            .value("privateDoNotAccessOrElseTrustedResourceUrlWrappedValue", privateDoNotAccessOrElseTrustedResourceUrlWrappedValue)
+            .end()
+            .value("interpreterHash", interpreterHash)
+            .value("program", program)
+            .value("globalName", globalName)
+            .value("clientExperimentsStateBlob", clientExperimentsStateBlob)
+            .done()
+    )
+}
+
+/**
+ * Parses the raw integrity token data obtained from the GenerateIT endpoint to a JavaScript
+ * `Uint8Array` that can be embedded directly in JavaScript code, and an [Int] representing the
+ * duration of this token in seconds.
+ */
+fun parseIntegrityTokenData(rawIntegrityTokenData: String): Pair<String, Long> {
+    val integrityTokenData = JsonParser.array().from(rawIntegrityTokenData)
+    return base64ToU8(integrityTokenData.getString(0)) to integrityTokenData.getLong(1)
+}
+
+/**
+ * Converts a string (usually the identifier used as input to `obtainPoToken`) to a JavaScript
+ * `Uint8Array` that can be embedded directly in JavaScript code.
+ */
+fun stringToU8(identifier: String): String {
+    return newUint8Array(identifier.toByteArray())
+}
+
+/**
+ * Takes a poToken encoded as a sequence of bytes represented as integers separated by commas
+ * (e.g. "97,98,99" would be "abc"), which is the output of `Uint8Array::toString()` in JavaScript,
+ * and converts it to the specific base64 representation for poTokens.
+ */
+fun u8ToBase64(poToken: String): String {
+    return poToken.split(",")
+        .map { it.toUByte().toByte() }
+        .toByteArray()
+        .toByteString()
+        .base64()
+        .replace("+", "-")
+        .replace("/", "_")
+}
+
+/**
+ * Takes the scrambled challenge, decodes it from base64, adds 97 to each byte.
+ */
+private fun descramble(scrambledChallenge: String): String {
+    return base64ToByteString(scrambledChallenge)
+        .map { (it + 97).toByte() }
+        .toByteArray()
+        .decodeToString()
+}
+
+/**
+ * Decodes a base64 string encoded in the specific base64 representation used by YouTube, and
+ * returns a JavaScript `Uint8Array` that can be embedded directly in JavaScript code.
+ */
+private fun base64ToU8(base64: String): String {
+    return newUint8Array(base64ToByteString(base64))
+}
+
+private fun newUint8Array(contents: ByteArray): String {
+    return "new Uint8Array([" + contents.joinToString(separator = ",") { it.toUByte().toString() } + "])"
+}
+
+/**
+ * Decodes a base64 string encoded in the specific base64 representation used by YouTube.
+ */
+private fun base64ToByteString(base64: String): ByteArray {
+    val base64Mod = base64
+        .replace('-', '+')
+        .replace('_', '/')
+        .replace('.', '=')
+
+    return (base64Mod.decodeBase64() ?: throw PoTokenException("Cannot base64 decode"))
+        .toByteArray()
+}

app/src/main/java/org/schabi/newpipe/util/potoken/PoTokenException.kt

@@ -0,0 +1,13 @@
+package org.schabi.newpipe.util.potoken
+
+class PoTokenException(message: String) : Exception(message)
+
+// to be thrown if the WebView provided by the system is broken
+class BadWebViewException(message: String) : Exception(message)
+
+fun buildExceptionForJsError(error: String): Exception {
+    return if (error.contains("SyntaxError"))
+        BadWebViewException(error)
+    else
+        PoTokenException(error)
+}