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Code Issues Releases Wiki Activity

Support encoding profiles

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Chocobozzz 2020-11-24 14:08:23 +01:00 • committed by Chocobozzz
parent 9252a33d11
commit 5a547f69d5
9 changed files with 402 additions and 157 deletions
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91
server/lib/video-transcoding.ts
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@ -2,30 +2,18 @@ import { copyFile, ensureDir, move, remove, stat } from 'fs-extra'
import { basename, extname as extnameUtil, join } from 'path'
import { createTorrentAndSetInfoHash } from '@server/helpers/webtorrent'
import { MStreamingPlaylistFilesVideo, MVideoFile, MVideoWithAllFiles, MVideoWithFile } from '@server/types/models'
import { getTargetBitrate, VideoResolution } from '../../shared/models/videos'
import { VideoResolution } from '../../shared/models/videos'
import { VideoStreamingPlaylistType } from '../../shared/models/videos/video-streaming-playlist.type'
import { AvailableEncoders, EncoderOptionsBuilder, transcode, TranscodeOptions, TranscodeOptionsType } from '../helpers/ffmpeg-utils'
import {
canDoQuickTranscode,
getAudioStream,
getDurationFromVideoFile,
getMaxAudioBitrate,
getMetadataFromFile,
getVideoFileBitrate,
getVideoFileFPS
} from '../helpers/ffprobe-utils'
import { transcode, TranscodeOptions, TranscodeOptionsType } from '../helpers/ffmpeg-utils'
import { canDoQuickTranscode, getDurationFromVideoFile, getMetadataFromFile, getVideoFileFPS } from '../helpers/ffprobe-utils'
import { logger } from '../helpers/logger'
import { CONFIG } from '../initializers/config'
import {
HLS_STREAMING_PLAYLIST_DIRECTORY,
P2P_MEDIA_LOADER_PEER_VERSION,
VIDEO_TRANSCODING_FPS,
WEBSERVER
} from '../initializers/constants'
import { HLS_STREAMING_PLAYLIST_DIRECTORY, P2P_MEDIA_LOADER_PEER_VERSION, WEBSERVER } from '../initializers/constants'
import { VideoFileModel } from '../models/video/video-file'
import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
import { updateMasterHLSPlaylist, updateSha256VODSegments } from './hls'
import { generateVideoStreamingPlaylistName, getVideoFilename, getVideoFilePath } from './video-paths'
import { availableEncoders } from './video-transcoding-profiles'
/**
* Optimize the original video file and replace it. The resolution is not changed.
@ -252,75 +240,6 @@ async function generateHlsPlaylist (options: {
return video
}
// ---------------------------------------------------------------------------
// Available encoders profiles
// ---------------------------------------------------------------------------
const defaultX264OptionsBuilder: EncoderOptionsBuilder = async ({ input, resolution, fps }) => {
if (!fps) return { outputOptions: [] }
let targetBitrate = getTargetBitrate(resolution, fps, VIDEO_TRANSCODING_FPS)
// Don't transcode to an higher bitrate than the original file
const fileBitrate = await getVideoFileBitrate(input)
targetBitrate = Math.min(targetBitrate, fileBitrate)
return {
outputOptions: [
// Constrained Encoding (VBV)
// https://slhck.info/video/2017/03/01/rate-control.html
// https://trac.ffmpeg.org/wiki/Limiting%20the%20output%20bitrate
`-maxrate ${targetBitrate}`, `-bufsize ${targetBitrate * 2}`
]
}
}
const defaultAACOptionsBuilder: EncoderOptionsBuilder = async ({ input }) => {
const parsedAudio = await getAudioStream(input)
// we try to reduce the ceiling bitrate by making rough matches of bitrates
// of course this is far from perfect, but it might save some space in the end
const audioCodecName = parsedAudio.audioStream['codec_name']
const bitrate = getMaxAudioBitrate(audioCodecName, parsedAudio.bitrate)
if (bitrate !== undefined && bitrate !== -1) {
return { outputOptions: [ '-b:a', bitrate + 'k' ] }
}
return { outputOptions: [] }
}
const defaultLibFDKAACOptionsBuilder: EncoderOptionsBuilder = () => {
return { outputOptions: [ '-aq', '5' ] }
}
const availableEncoders: AvailableEncoders = {
vod: {
libx264: {
default: defaultX264OptionsBuilder
},
aac: {
default: defaultAACOptionsBuilder
},
libfdkAAC: {
default: defaultLibFDKAACOptionsBuilder
}
},
live: {
libx264: {
default: defaultX264OptionsBuilder
},
aac: {
default: defaultAACOptionsBuilder
},
libfdkAAC: {
default: defaultLibFDKAACOptionsBuilder
}
}
}
// ---------------------------------------------------------------------------
export {