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authorChocobozzz <me@florianbigard.com>2020-11-24 14:08:23 +0100
committerChocobozzz <chocobozzz@cpy.re>2020-11-25 10:07:51 +0100
commit5a547f69d5dc5867e253f7721513479c754b4f15 (patch)
tree5ccad0e07d04e24d7a4c0b624a46d3b5a93ebce5 /server/lib/video-transcoding.ts
parent9252a33d115bba85adcfbc18ab3725924642871c (diff)
downloadPeerTube-5a547f69d5dc5867e253f7721513479c754b4f15.tar.gz
PeerTube-5a547f69d5dc5867e253f7721513479c754b4f15.tar.zst
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Support encoding profiles
Diffstat (limited to 'server/lib/video-transcoding.ts')
-rw-r--r--server/lib/video-transcoding.ts91
1 files changed, 5 insertions, 86 deletions
diff --git a/server/lib/video-transcoding.ts b/server/lib/video-transcoding.ts
index 0e6a0e984..aaad219dd 100644
--- a/server/lib/video-transcoding.ts
+++ b/server/lib/video-transcoding.ts
@@ -2,30 +2,18 @@ import { copyFile, ensureDir, move, remove, stat } from 'fs-extra'
2import { basename, extname as extnameUtil, join } from 'path' 2import { basename, extname as extnameUtil, join } from 'path'
3import { createTorrentAndSetInfoHash } from '@server/helpers/webtorrent' 3import { createTorrentAndSetInfoHash } from '@server/helpers/webtorrent'
4import { MStreamingPlaylistFilesVideo, MVideoFile, MVideoWithAllFiles, MVideoWithFile } from '@server/types/models' 4import { MStreamingPlaylistFilesVideo, MVideoFile, MVideoWithAllFiles, MVideoWithFile } from '@server/types/models'
5import { getTargetBitrate, VideoResolution } from '../../shared/models/videos' 5import { VideoResolution } from '../../shared/models/videos'
6import { VideoStreamingPlaylistType } from '../../shared/models/videos/video-streaming-playlist.type' 6import { VideoStreamingPlaylistType } from '../../shared/models/videos/video-streaming-playlist.type'
7import { AvailableEncoders, EncoderOptionsBuilder, transcode, TranscodeOptions, TranscodeOptionsType } from '../helpers/ffmpeg-utils' 7import { transcode, TranscodeOptions, TranscodeOptionsType } from '../helpers/ffmpeg-utils'
8import { 8import { canDoQuickTranscode, getDurationFromVideoFile, getMetadataFromFile, getVideoFileFPS } from '../helpers/ffprobe-utils'
9 canDoQuickTranscode,
10 getAudioStream,
11 getDurationFromVideoFile,
12 getMaxAudioBitrate,
13 getMetadataFromFile,
14 getVideoFileBitrate,
15 getVideoFileFPS
16} from '../helpers/ffprobe-utils'
17import { logger } from '../helpers/logger' 9import { logger } from '../helpers/logger'
18import { CONFIG } from '../initializers/config' 10import { CONFIG } from '../initializers/config'
19import { 11import { HLS_STREAMING_PLAYLIST_DIRECTORY, P2P_MEDIA_LOADER_PEER_VERSION, WEBSERVER } from '../initializers/constants'
20 HLS_STREAMING_PLAYLIST_DIRECTORY,
21 P2P_MEDIA_LOADER_PEER_VERSION,
22 VIDEO_TRANSCODING_FPS,
23 WEBSERVER
24} from '../initializers/constants'
25import { VideoFileModel } from '../models/video/video-file' 12import { VideoFileModel } from '../models/video/video-file'
26import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist' 13import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
27import { updateMasterHLSPlaylist, updateSha256VODSegments } from './hls' 14import { updateMasterHLSPlaylist, updateSha256VODSegments } from './hls'
28import { generateVideoStreamingPlaylistName, getVideoFilename, getVideoFilePath } from './video-paths' 15import { generateVideoStreamingPlaylistName, getVideoFilename, getVideoFilePath } from './video-paths'
16import { availableEncoders } from './video-transcoding-profiles'
29 17
30/** 18/**
31 * Optimize the original video file and replace it. The resolution is not changed. 19 * Optimize the original video file and replace it. The resolution is not changed.
@@ -253,75 +241,6 @@ async function generateHlsPlaylist (options: {
253} 241}
254 242
255// --------------------------------------------------------------------------- 243// ---------------------------------------------------------------------------
256// Available encoders profiles
257// ---------------------------------------------------------------------------
258
259const defaultX264OptionsBuilder: EncoderOptionsBuilder = async ({ input, resolution, fps }) => {
260 if (!fps) return { outputOptions: [] }
261
262 let targetBitrate = getTargetBitrate(resolution, fps, VIDEO_TRANSCODING_FPS)
263
264 // Don't transcode to an higher bitrate than the original file
265 const fileBitrate = await getVideoFileBitrate(input)
266 targetBitrate = Math.min(targetBitrate, fileBitrate)
267
268 return {
269 outputOptions: [
270 // Constrained Encoding (VBV)
271 // https://slhck.info/video/2017/03/01/rate-control.html
272 // https://trac.ffmpeg.org/wiki/Limiting%20the%20output%20bitrate
273 `-maxrate ${targetBitrate}`, `-bufsize ${targetBitrate * 2}`
274 ]
275 }
276}
277
278const defaultAACOptionsBuilder: EncoderOptionsBuilder = async ({ input }) => {
279 const parsedAudio = await getAudioStream(input)
280
281 // we try to reduce the ceiling bitrate by making rough matches of bitrates
282 // of course this is far from perfect, but it might save some space in the end
283
284 const audioCodecName = parsedAudio.audioStream['codec_name']
285
286 const bitrate = getMaxAudioBitrate(audioCodecName, parsedAudio.bitrate)
287
288 if (bitrate !== undefined && bitrate !== -1) {
289 return { outputOptions: [ '-b:a', bitrate + 'k' ] }
290 }
291
292 return { outputOptions: [] }
293}
294
295const defaultLibFDKAACOptionsBuilder: EncoderOptionsBuilder = () => {
296 return { outputOptions: [ '-aq', '5' ] }
297}
298
299const availableEncoders: AvailableEncoders = {
300 vod: {
301 libx264: {
302 default: defaultX264OptionsBuilder
303 },
304 aac: {
305 default: defaultAACOptionsBuilder
306 },
307 libfdkAAC: {
308 default: defaultLibFDKAACOptionsBuilder
309 }
310 },
311 live: {
312 libx264: {
313 default: defaultX264OptionsBuilder
314 },
315 aac: {
316 default: defaultAACOptionsBuilder
317 },
318 libfdkAAC: {
319 default: defaultLibFDKAACOptionsBuilder
320 }
321 }
322}
323
324// ---------------------------------------------------------------------------
325 244
326export { 245export {
327 generateHlsPlaylist, 246 generateHlsPlaylist,