X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=server%2Fhelpers%2Fffmpeg-utils.ts;h=69564a1a3b4c068b4aaad19987c5b3b0a7b0d74a;hb=9e2b2e76ba5f7f570dcf59fc03bfec98ea5ffab8;hp=e0e408ea025436f2deab558977a8d2354b452954;hpb=7b81edc854902a536083298472bf92bb6726edcf;p=github%2FChocobozzz%2FPeerTube.git diff --git a/server/helpers/ffmpeg-utils.ts b/server/helpers/ffmpeg-utils.ts index e0e408ea0..69564a1a3 100644 --- a/server/helpers/ffmpeg-utils.ts +++ b/server/helpers/ffmpeg-utils.ts @@ -1,13 +1,13 @@ import * as ffmpeg from 'fluent-ffmpeg' +import { readFile, remove, writeFile } from 'fs-extra' import { dirname, join } from 'path' +import { VideoFileMetadata } from '@shared/models/videos/video-file-metadata' import { getMaxBitrate, getTargetBitrate, VideoResolution } from '../../shared/models/videos' -import { FFMPEG_NICE, VIDEO_TRANSCODING_FPS } from '../initializers/constants' -import { processImage } from './image-utils' -import { logger } from './logger' import { checkFFmpegEncoders } from '../initializers/checker-before-init' -import { readFile, remove, writeFile } from 'fs-extra' import { CONFIG } from '../initializers/config' -import { VideoFileMetadata } from '@shared/models/videos/video-file-metadata' +import { FFMPEG_NICE, VIDEO_LIVE, VIDEO_TRANSCODING_FPS } from '../initializers/constants' +import { processImage } from './image-utils' +import { logger } from './logger' /** * A toolbox to play with audio @@ -74,9 +74,12 @@ namespace audio { } } -function computeResolutionsToTranscode (videoFileHeight: number) { +function computeResolutionsToTranscode (videoFileResolution: number, type: 'vod' | 'live') { + const configResolutions = type === 'vod' + ? CONFIG.TRANSCODING.RESOLUTIONS + : CONFIG.LIVE.TRANSCODING.RESOLUTIONS + const resolutionsEnabled: number[] = [] - const configResolutions = CONFIG.TRANSCODING.RESOLUTIONS // Put in the order we want to proceed jobs const resolutions = [ @@ -90,7 +93,7 @@ function computeResolutionsToTranscode (videoFileHeight: number) { ] for (const resolution of resolutions) { - if (configResolutions[resolution + 'p'] === true && videoFileHeight > resolution) { + if (configResolutions[resolution + 'p'] === true && videoFileResolution > resolution) { resolutionsEnabled.push(resolution) } } @@ -125,7 +128,8 @@ async function getVideoStreamCodec (path: string) { baseProfile = baseProfileMatrix['High'] // Fallback } - const level = videoStream.level.toString(16) + let level = videoStream.level.toString(16) + if (level.length === 1) level = `0${level}` return `${videoCodec}.${baseProfile}${level}` } @@ -267,15 +271,17 @@ type TranscodeOptions = | QuickTranscodeOptions function transcode (options: TranscodeOptions) { + logger.debug('Will run transcode.', { options }) + return new Promise(async (res, rej) => { try { - let command = ffmpeg(options.inputPath, { niceness: FFMPEG_NICE.TRANSCODING }) + let command = getFFmpeg(options.inputPath) .output(options.outputPath) if (options.type === 'quick-transcode') { command = buildQuickTranscodeCommand(command) } else if (options.type === 'hls') { - command = await buildHLSCommand(command, options) + command = await buildHLSVODCommand(command, options) } else if (options.type === 'merge-audio') { command = await buildAudioMergeCommand(command, options) } else if (options.type === 'only-audio') { @@ -284,11 +290,6 @@ function transcode (options: TranscodeOptions) { command = await buildx264Command(command, options) } - if (CONFIG.TRANSCODING.THREADS > 0) { - // if we don't set any threads ffmpeg will chose automatically - command = command.outputOption('-threads ' + CONFIG.TRANSCODING.THREADS) - } - command .on('error', (err, stdout, stderr) => { logger.error('Error in transcoding job.', { stdout, stderr }) @@ -337,15 +338,147 @@ function getClosestFramerateStandard (fps: number, type: 'HD_STANDARD' | 'STANDA .sort((a, b) => fps % a - fps % b)[0] } +function convertWebPToJPG (path: string, destination: string): Promise { + return new Promise(async (res, rej) => { + try { + const command = ffmpeg(path).output(destination) + + command.on('error', (err, stdout, stderr) => { + logger.error('Error in ffmpeg webp convert process.', { stdout, stderr }) + return rej(err) + }) + .on('end', () => res()) + .run() + } catch (err) { + return rej(err) + } + }) +} + +function runLiveTranscoding (rtmpUrl: string, outPath: string, resolutions: number[], fps, deleteSegments: boolean) { + const command = getFFmpeg(rtmpUrl) + command.inputOption('-fflags nobuffer') + + const varStreamMap: string[] = [] + + command.complexFilter([ + { + inputs: '[v:0]', + filter: 'split', + options: resolutions.length, + outputs: resolutions.map(r => `vtemp${r}`) + }, + + ...resolutions.map(r => ({ + inputs: `vtemp${r}`, + filter: 'scale', + options: `w=-2:h=${r}`, + outputs: `vout${r}` + })) + ]) + + command.outputOption('-b_strategy 1') + command.outputOption('-bf 16') + command.outputOption('-preset superfast') + command.outputOption('-level 3.1') + command.outputOption('-map_metadata -1') + command.outputOption('-pix_fmt yuv420p') + command.outputOption('-max_muxing_queue_size 1024') + command.outputOption('-g ' + (fps * 2)) + + for (let i = 0; i < resolutions.length; i++) { + const resolution = resolutions[i] + + command.outputOption(`-map [vout${resolution}]`) + command.outputOption(`-c:v:${i} libx264`) + command.outputOption(`-b:v:${i} ${getTargetBitrate(resolution, fps, VIDEO_TRANSCODING_FPS)}`) + + command.outputOption(`-map a:0`) + command.outputOption(`-c:a:${i} aac`) + + varStreamMap.push(`v:${i},a:${i}`) + } + + addDefaultLiveHLSParams(command, outPath, deleteSegments) + + command.outputOption('-var_stream_map', varStreamMap.join(' ')) + + command.run() + + return command +} + +function runLiveMuxing (rtmpUrl: string, outPath: string, deleteSegments: boolean) { + const command = getFFmpeg(rtmpUrl) + command.inputOption('-fflags nobuffer') + + command.outputOption('-c:v copy') + command.outputOption('-c:a copy') + command.outputOption('-map 0:a?') + command.outputOption('-map 0:v?') + + addDefaultLiveHLSParams(command, outPath, deleteSegments) + + command.run() + + return command +} + +async function hlsPlaylistToFragmentedMP4 (hlsDirectory: string, segmentFiles: string[], outputPath: string) { + const concatFilePath = join(hlsDirectory, 'concat.txt') + + function cleaner () { + remove(concatFilePath) + .catch(err => logger.error('Cannot remove concat file in %s.', hlsDirectory, { err })) + } + + // First concat the ts files to a mp4 file + const content = segmentFiles.map(f => 'file ' + f) + .join('\n') + + await writeFile(concatFilePath, content + '\n') + + const command = getFFmpeg(concatFilePath) + command.inputOption('-safe 0') + command.inputOption('-f concat') + + command.outputOption('-c:v copy') + command.audioFilter('aresample=async=1:first_pts=0') + command.output(outputPath) + + return runCommand(command, cleaner) +} + +async function runCommand (command: ffmpeg.FfmpegCommand, onEnd?: Function) { + command.run() + + return new Promise((res, rej) => { + command.on('error', err => { + if (onEnd) onEnd() + + rej(err) + }) + + command.on('end', () => { + if (onEnd) onEnd() + + res() + }) + }) +} + // --------------------------------------------------------------------------- export { getVideoStreamCodec, getAudioStreamCodec, + runLiveMuxing, + convertWebPToJPG, getVideoStreamSize, getVideoFileResolution, getMetadataFromFile, getDurationFromVideoFile, + runLiveTranscoding, generateImageFromVideoFile, TranscodeOptions, TranscodeOptionsType, @@ -353,12 +486,36 @@ export { getVideoFileFPS, computeResolutionsToTranscode, audio, + hlsPlaylistToFragmentedMP4, getVideoFileBitrate, canDoQuickTranscode } // --------------------------------------------------------------------------- +function addDefaultX264Params (command: ffmpeg.FfmpegCommand) { + command.outputOption('-level 3.1') // 3.1 is the minimal resource allocation for our highest supported resolution + .outputOption('-b_strategy 1') // NOTE: b-strategy 1 - heuristic algorithm, 16 is optimal B-frames for it + .outputOption('-bf 16') // NOTE: Why 16: https://github.com/Chocobozzz/PeerTube/pull/774. b-strategy 2 -> B-frames<16 + .outputOption('-pix_fmt yuv420p') // allows import of source material with incompatible pixel formats (e.g. MJPEG video) + .outputOption('-map_metadata -1') // strip all metadata +} + +function addDefaultLiveHLSParams (command: ffmpeg.FfmpegCommand, outPath: string, deleteSegments: boolean) { + command.outputOption('-hls_time ' + VIDEO_LIVE.SEGMENT_TIME_SECONDS) + command.outputOption('-hls_list_size ' + VIDEO_LIVE.SEGMENTS_LIST_SIZE) + + if (deleteSegments === true) { + command.outputOption('-hls_flags delete_segments') + } + + command.outputOption(`-hls_segment_filename ${join(outPath, '%v-%04d.ts')}`) + command.outputOption('-master_pl_name master.m3u8') + command.outputOption(`-f hls`) + + command.output(join(outPath, '%v.m3u8')) +} + async function buildx264Command (command: ffmpeg.FfmpegCommand, options: TranscodeOptions) { let fps = await getVideoFileFPS(options.inputPath) if ( @@ -418,10 +575,11 @@ function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) { return command } -async function buildHLSCommand (command: ffmpeg.FfmpegCommand, options: HLSTranscodeOptions) { +async function buildHLSVODCommand (command: ffmpeg.FfmpegCommand, options: HLSTranscodeOptions) { const videoPath = getHLSVideoPath(options) if (options.copyCodecs) command = presetCopy(command) + else if (options.resolution === VideoResolution.H_NOVIDEO) command = presetOnlyAudio(command) else command = await buildx264Command(command, options) command = command.outputOption('-hls_time 4') @@ -487,13 +645,10 @@ async function presetH264 (command: ffmpeg.FfmpegCommand, input: string, resolut let localCommand = command .format('mp4') .videoCodec('libx264') - .outputOption('-level 3.1') // 3.1 is the minimal resource allocation for our highest supported resolution - .outputOption('-b_strategy 1') // NOTE: b-strategy 1 - heuristic algorithm, 16 is optimal B-frames for it - .outputOption('-bf 16') // NOTE: Why 16: https://github.com/Chocobozzz/PeerTube/pull/774. b-strategy 2 -> B-frames<16 - .outputOption('-pix_fmt yuv420p') // allows import of source material with incompatible pixel formats (e.g. MJPEG video) - .outputOption('-map_metadata -1') // strip all metadata .outputOption('-movflags faststart') + addDefaultX264Params(localCommand) + const parsedAudio = await audio.get(input) if (!parsedAudio.audioStream) { @@ -544,3 +699,15 @@ function presetOnlyAudio (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand { .audioCodec('copy') .noVideo() } + +function getFFmpeg (input: string) { + // We set cwd explicitly because ffmpeg appears to create temporary files when trancoding which fails in read-only file systems + const command = ffmpeg(input, { niceness: FFMPEG_NICE.TRANSCODING, cwd: CONFIG.STORAGE.TMP_DIR }) + + if (CONFIG.TRANSCODING.THREADS > 0) { + // If we don't set any threads ffmpeg will chose automatically + command.outputOption('-threads ' + CONFIG.TRANSCODING.THREADS) + } + + return command +}