X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=server%2Fhelpers%2Fffprobe-utils.ts;h=d2476606e8edc51a9bee759b9d5de00a948fbea8;hb=6f4945126bfc5fcd4df0ae4a73eb0ff79f762657;hp=5545ddbbfd5a4abca0cc7e5161f8e34a8c918f4e;hpb=5a547f69d5dc5867e253f7721513479c754b4f15;p=github%2FChocobozzz%2FPeerTube.git diff --git a/server/helpers/ffprobe-utils.ts b/server/helpers/ffprobe-utils.ts index 5545ddbbf..d2476606e 100644 --- a/server/helpers/ffprobe-utils.ts +++ b/server/helpers/ffprobe-utils.ts @@ -5,6 +5,12 @@ import { CONFIG } from '../initializers/config' import { VIDEO_TRANSCODING_FPS } from '../initializers/constants' import { logger } from './logger' +/** + * + * Helpers to run ffprobe and extract data from the JSON output + * + */ + function ffprobePromise (path: string) { return new Promise((res, rej) => { ffmpeg.ffprobe(path, (err, data) => { @@ -37,38 +43,37 @@ async function getAudioStream (videoPath: string, existingProbe?: ffmpeg.Ffprobe } function getMaxAudioBitrate (type: 'aac' | 'mp3' | string, bitrate: number) { - const baseKbitrate = 384 - const toBits = (kbits: number) => kbits * 8000 + const maxKBitrate = 384 + const kToBits = (kbits: number) => kbits * 1000 + + // If we did not manage to get the bitrate, use an average value + if (!bitrate) return 256 if (type === 'aac') { switch (true) { - case bitrate > toBits(baseKbitrate): - return baseKbitrate + case bitrate > kToBits(maxKBitrate): + return maxKBitrate default: return -1 // we interpret it as a signal to copy the audio stream as is } } - if (type === 'mp3') { - /* - a 192kbit/sec mp3 doesn't hold as much information as a 192kbit/sec aac. - That's why, when using aac, we can go to lower kbit/sec. The equivalences - made here are not made to be accurate, especially with good mp3 encoders. - */ - switch (true) { - case bitrate <= toBits(192): - return 128 + /* + a 192kbit/sec mp3 doesn't hold as much information as a 192kbit/sec aac. + That's why, when using aac, we can go to lower kbit/sec. The equivalences + made here are not made to be accurate, especially with good mp3 encoders. + */ + switch (true) { + case bitrate <= kToBits(192): + return 128 - case bitrate <= toBits(384): - return 256 + case bitrate <= kToBits(384): + return 256 - default: - return baseKbitrate - } + default: + return maxKBitrate } - - return undefined } async function getVideoStreamSize (path: string, existingProbe?: ffmpeg.FfprobeData) { @@ -86,18 +91,35 @@ async function getVideoStreamCodec (path: string) { const videoCodec = videoStream.codec_tag_string + if (videoCodec === 'vp09') return 'vp09.00.50.08' + const baseProfileMatrix = { - High: '6400', - Main: '4D40', - Baseline: '42E0' + avc1: { + High: '6400', + Main: '4D40', + Baseline: '42E0' + }, + av01: { + High: '1', + Main: '0', + Professional: '2' + } } - let baseProfile = baseProfileMatrix[videoStream.profile] + let baseProfile = baseProfileMatrix[videoCodec][videoStream.profile] if (!baseProfile) { logger.warn('Cannot get video profile codec of %s.', path, { videoStream }) - baseProfile = baseProfileMatrix['High'] // Fallback + baseProfile = baseProfileMatrix[videoCodec]['High'] // Fallback + } + + if (videoCodec === 'av01') { + const level = videoStream.level + + // Guess the tier indicator and bit depth + return `${videoCodec}.${baseProfile}.${level}M.08` } + // Default, h264 codec let level = videoStream.level.toString(16) if (level.length === 1) level = `0${level}` @@ -109,8 +131,11 @@ async function getAudioStreamCodec (path: string, existingProbe?: ffmpeg.Ffprobe if (!audioStream) return '' - const audioCodec = audioStream.codec_name - if (audioCodec === 'aac') return 'mp4a.40.2' + const audioCodecName = audioStream.codec_name + + if (audioCodecName === 'opus') return 'opus' + if (audioCodecName === 'vorbis') return 'vorbis' + if (audioCodecName === 'aac') return 'mp4a.40.2' logger.warn('Cannot get audio codec of %s.', path, { audioStream }) @@ -159,7 +184,7 @@ async function getVideoFileBitrate (path: string, existingProbe?: ffmpeg.Ffprobe async function getDurationFromVideoFile (path: string, existingProbe?: ffmpeg.FfprobeData) { const metadata = await getMetadataFromFile(path, existingProbe) - return Math.floor(metadata.format.duration) + return Math.round(metadata.format.duration) } async function getVideoStreamFromFile (path: string, existingProbe?: ffmpeg.FfprobeData) { @@ -183,6 +208,7 @@ function computeResolutionsToTranscode (videoFileResolution: number, type: 'vod' VideoResolution.H_720P, VideoResolution.H_240P, VideoResolution.H_1080P, + VideoResolution.H_1440P, VideoResolution.H_4K ] @@ -196,6 +222,8 @@ function computeResolutionsToTranscode (videoFileResolution: number, type: 'vod' } async function canDoQuickTranscode (path: string): Promise { + if (CONFIG.TRANSCODING.PROFILE !== 'default') return false + const probe = await ffprobePromise(path) return await canDoQuickVideoTranscode(path, probe) && @@ -208,6 +236,9 @@ async function canDoQuickVideoTranscode (path: string, probe?: ffmpeg.FfprobeDat const bitRate = await getVideoFileBitrate(path, probe) const resolution = await getVideoFileResolution(path, probe) + // If ffprobe did not manage to guess the bitrate + if (!bitRate) return false + // check video params if (videoStream == null) return false if (videoStream['codec_name'] !== 'h264') return false @@ -221,15 +252,19 @@ async function canDoQuickVideoTranscode (path: string, probe?: ffmpeg.FfprobeDat async function canDoQuickAudioTranscode (path: string, probe?: ffmpeg.FfprobeData): Promise { const parsedAudio = await getAudioStream(path, probe) - // check audio params (if audio stream exists) - if (parsedAudio.audioStream) { - if (parsedAudio.audioStream['codec_name'] !== 'aac') return false + if (!parsedAudio.audioStream) return true - const audioBitrate = parsedAudio.bitrate + if (parsedAudio.audioStream['codec_name'] !== 'aac') return false - const maxAudioBitrate = getMaxAudioBitrate('aac', audioBitrate) - if (maxAudioBitrate !== -1 && audioBitrate > maxAudioBitrate) return false - } + const audioBitrate = parsedAudio.bitrate + if (!audioBitrate) return false + + const maxAudioBitrate = getMaxAudioBitrate('aac', audioBitrate) + if (maxAudioBitrate !== -1 && audioBitrate > maxAudioBitrate) return false + + const channelLayout = parsedAudio.audioStream['channel_layout'] + // Causes playback issues with Chrome + if (!channelLayout || channelLayout === 'unknown') return false return true } @@ -239,6 +274,26 @@ function getClosestFramerateStandard (fps: number, type: 'HD_STANDARD' | 'STANDA .sort((a, b) => fps % a - fps % b)[0] } +function computeFPS (fpsArg: number, resolution: VideoResolution) { + let fps = fpsArg + + if ( + // On small/medium resolutions, limit FPS + resolution !== undefined && + resolution < VIDEO_TRANSCODING_FPS.KEEP_ORIGIN_FPS_RESOLUTION_MIN && + fps > VIDEO_TRANSCODING_FPS.AVERAGE + ) { + // Get closest standard framerate by modulo: downsampling has to be done to a divisor of the nominal fps value + fps = getClosestFramerateStandard(fps, 'STANDARD') + } + + // Hard FPS limits + if (fps > VIDEO_TRANSCODING_FPS.MAX) fps = getClosestFramerateStandard(fps, 'HD_STANDARD') + else if (fps < VIDEO_TRANSCODING_FPS.MIN) fps = VIDEO_TRANSCODING_FPS.MIN + + return fps +} + // --------------------------------------------------------------------------- export { @@ -251,6 +306,7 @@ export { getVideoStreamFromFile, getDurationFromVideoFile, getAudioStream, + computeFPS, getVideoFileFPS, ffprobePromise, getClosestFramerateStandard,