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Code Issues Releases Wiki Activity

Limit live bitrate

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Chocobozzz 2021-08-06 10:39:40 +02:00
parent 421ff4618d
commit c826f34a45
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GPG key ID: 583A612D890159BE
10 changed files with 122 additions and 51 deletions
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33
server/lib/transcoding/video-transcoding-profiles.ts
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@ -1,14 +1,7 @@
import { logger } from '@server/helpers/logger'
import { AvailableEncoders, EncoderOptionsBuilder, getTargetBitrate, VideoResolution } from '../../../shared/models/videos'
import { buildStreamSuffix, resetSupportedEncoders } from '../../helpers/ffmpeg-utils'
import {
canDoQuickAudioTranscode,
ffprobePromise,
getAudioStream,
getMaxAudioBitrate,
getVideoFileBitrate,
getVideoStreamFromFile
} from '../../helpers/ffprobe-utils'
import { canDoQuickAudioTranscode, ffprobePromise, getAudioStream, getMaxAudioBitrate } from '../../helpers/ffprobe-utils'
import { VIDEO_TRANSCODING_FPS } from '../../initializers/constants'
/**
@ -22,8 +15,8 @@ import { VIDEO_TRANSCODING_FPS } from '../../initializers/constants'
// * https://slhck.info/video/2017/03/01/rate-control.html
// * https://trac.ffmpeg.org/wiki/Limiting%20the%20output%20bitrate
const defaultX264VODOptionsBuilder: EncoderOptionsBuilder = async ({ input, resolution, fps }) => {
const targetBitrate = await buildTargetBitrate({ input, resolution, fps })
const defaultX264VODOptionsBuilder: EncoderOptionsBuilder = async ({ inputBitrate, resolution, fps }) => {
const targetBitrate = buildTargetBitrate({ inputBitrate, resolution, fps })
if (!targetBitrate) return { outputOptions: [ ] }
return {
@ -36,8 +29,8 @@ const defaultX264VODOptionsBuilder: EncoderOptionsBuilder = async ({ input, reso
}
}
const defaultX264LiveOptionsBuilder: EncoderOptionsBuilder = async ({ resolution, fps, streamNum }) => {
const targetBitrate = getTargetBitrate(resolution, fps, VIDEO_TRANSCODING_FPS)
const defaultX264LiveOptionsBuilder: EncoderOptionsBuilder = async ({ resolution, fps, inputBitrate, streamNum }) => {
const targetBitrate = buildTargetBitrate({ inputBitrate, resolution, fps })
return {
outputOptions: [
@ -237,20 +230,16 @@ export {
}
// ---------------------------------------------------------------------------
async function buildTargetBitrate (options: {
input: string
function buildTargetBitrate (options: {
inputBitrate: number
resolution: VideoResolution
fps: number
}) {
const { input, resolution, fps } = options
const probe = await ffprobePromise(input)
const videoStream = await getVideoStreamFromFile(input, probe)
if (!videoStream) return undefined
const { inputBitrate, resolution, fps } = options
const targetBitrate = getTargetBitrate(resolution, fps, VIDEO_TRANSCODING_FPS)
if (!inputBitrate) return targetBitrate
// Don't transcode to an higher bitrate than the original file
const fileBitrate = await getVideoFileBitrate(input, probe)
return Math.min(targetBitrate, fileBitrate)
return Math.min(targetBitrate, inputBitrate)
}