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1 | import { Job } from 'bull' | |
2 | import * as ffmpeg from 'fluent-ffmpeg' | |
3 | import { readFile, remove, writeFile } from 'fs-extra' | |
4 | import { dirname, join } from 'path' | |
5 | import { FFMPEG_NICE, VIDEO_LIVE } from '@server/initializers/constants' | |
6 | import { AvailableEncoders, EncoderOptions, EncoderOptionsBuilder, EncoderProfile, VideoResolution } from '../../shared/models/videos' | |
7 | import { CONFIG } from '../initializers/config' | |
8 | import { execPromise, promisify0 } from './core-utils' | |
9 | import { computeFPS, getAudioStream, getVideoFileFPS } from './ffprobe-utils' | |
10 | import { processImage } from './image-utils' | |
11 | import { logger } from './logger' | |
12 | ||
13 | /** | |
14 | * | |
15 | * Functions that run transcoding/muxing ffmpeg processes | |
16 | * Mainly called by lib/video-transcoding.ts and lib/live-manager.ts | |
17 | * | |
18 | */ | |
19 | ||
20 | // --------------------------------------------------------------------------- | |
21 | // Encoder options | |
22 | // --------------------------------------------------------------------------- | |
23 | ||
24 | type StreamType = 'audio' | 'video' | |
25 | ||
26 | // --------------------------------------------------------------------------- | |
27 | // Encoders support | |
28 | // --------------------------------------------------------------------------- | |
29 | ||
30 | // Detect supported encoders by ffmpeg | |
31 | let supportedEncoders: Map<string, boolean> | |
32 | async function checkFFmpegEncoders (peertubeAvailableEncoders: AvailableEncoders): Promise<Map<string, boolean>> { | |
33 | if (supportedEncoders !== undefined) { | |
34 | return supportedEncoders | |
35 | } | |
36 | ||
37 | const getAvailableEncodersPromise = promisify0(ffmpeg.getAvailableEncoders) | |
38 | const availableFFmpegEncoders = await getAvailableEncodersPromise() | |
39 | ||
40 | const searchEncoders = new Set<string>() | |
41 | for (const type of [ 'live', 'vod' ]) { | |
42 | for (const streamType of [ 'audio', 'video' ]) { | |
43 | for (const encoder of peertubeAvailableEncoders.encodersToTry[type][streamType]) { | |
44 | searchEncoders.add(encoder) | |
45 | } | |
46 | } | |
47 | } | |
48 | ||
49 | supportedEncoders = new Map<string, boolean>() | |
50 | ||
51 | for (const searchEncoder of searchEncoders) { | |
52 | supportedEncoders.set(searchEncoder, availableFFmpegEncoders[searchEncoder] !== undefined) | |
53 | } | |
54 | ||
55 | logger.info('Built supported ffmpeg encoders.', { supportedEncoders, searchEncoders }) | |
56 | ||
57 | return supportedEncoders | |
58 | } | |
59 | ||
60 | function resetSupportedEncoders () { | |
61 | supportedEncoders = undefined | |
62 | } | |
63 | ||
64 | // --------------------------------------------------------------------------- | |
65 | // Image manipulation | |
66 | // --------------------------------------------------------------------------- | |
67 | ||
68 | function convertWebPToJPG (path: string, destination: string): Promise<void> { | |
69 | const command = ffmpeg(path, { niceness: FFMPEG_NICE.THUMBNAIL }) | |
70 | .output(destination) | |
71 | ||
72 | return runCommand({ command, silent: true }) | |
73 | } | |
74 | ||
75 | function processGIF ( | |
76 | path: string, | |
77 | destination: string, | |
78 | newSize: { width: number, height: number } | |
79 | ): Promise<void> { | |
80 | const command = ffmpeg(path, { niceness: FFMPEG_NICE.THUMBNAIL }) | |
81 | .fps(20) | |
82 | .size(`${newSize.width}x${newSize.height}`) | |
83 | .output(destination) | |
84 | ||
85 | return runCommand({ command }) | |
86 | } | |
87 | ||
88 | async function generateImageFromVideoFile (fromPath: string, folder: string, imageName: string, size: { width: number, height: number }) { | |
89 | const pendingImageName = 'pending-' + imageName | |
90 | ||
91 | const options = { | |
92 | filename: pendingImageName, | |
93 | count: 1, | |
94 | folder | |
95 | } | |
96 | ||
97 | const pendingImagePath = join(folder, pendingImageName) | |
98 | ||
99 | try { | |
100 | await new Promise<string>((res, rej) => { | |
101 | ffmpeg(fromPath, { niceness: FFMPEG_NICE.THUMBNAIL }) | |
102 | .on('error', rej) | |
103 | .on('end', () => res(imageName)) | |
104 | .thumbnail(options) | |
105 | }) | |
106 | ||
107 | const destination = join(folder, imageName) | |
108 | await processImage(pendingImagePath, destination, size) | |
109 | } catch (err) { | |
110 | logger.error('Cannot generate image from video %s.', fromPath, { err }) | |
111 | ||
112 | try { | |
113 | await remove(pendingImagePath) | |
114 | } catch (err) { | |
115 | logger.debug('Cannot remove pending image path after generation error.', { err }) | |
116 | } | |
117 | } | |
118 | } | |
119 | ||
120 | // --------------------------------------------------------------------------- | |
121 | // Transcode meta function | |
122 | // --------------------------------------------------------------------------- | |
123 | ||
124 | type TranscodeOptionsType = 'hls' | 'hls-from-ts' | 'quick-transcode' | 'video' | 'merge-audio' | 'only-audio' | |
125 | ||
126 | interface BaseTranscodeOptions { | |
127 | type: TranscodeOptionsType | |
128 | ||
129 | inputPath: string | |
130 | outputPath: string | |
131 | ||
132 | availableEncoders: AvailableEncoders | |
133 | profile: string | |
134 | ||
135 | resolution: number | |
136 | ||
137 | isPortraitMode?: boolean | |
138 | ||
139 | job?: Job | |
140 | } | |
141 | ||
142 | interface HLSTranscodeOptions extends BaseTranscodeOptions { | |
143 | type: 'hls' | |
144 | copyCodecs: boolean | |
145 | hlsPlaylist: { | |
146 | videoFilename: string | |
147 | } | |
148 | } | |
149 | ||
150 | interface HLSFromTSTranscodeOptions extends BaseTranscodeOptions { | |
151 | type: 'hls-from-ts' | |
152 | ||
153 | isAAC: boolean | |
154 | ||
155 | hlsPlaylist: { | |
156 | videoFilename: string | |
157 | } | |
158 | } | |
159 | ||
160 | interface QuickTranscodeOptions extends BaseTranscodeOptions { | |
161 | type: 'quick-transcode' | |
162 | } | |
163 | ||
164 | interface VideoTranscodeOptions extends BaseTranscodeOptions { | |
165 | type: 'video' | |
166 | } | |
167 | ||
168 | interface MergeAudioTranscodeOptions extends BaseTranscodeOptions { | |
169 | type: 'merge-audio' | |
170 | audioPath: string | |
171 | } | |
172 | ||
173 | interface OnlyAudioTranscodeOptions extends BaseTranscodeOptions { | |
174 | type: 'only-audio' | |
175 | } | |
176 | ||
177 | type TranscodeOptions = | |
178 | HLSTranscodeOptions | |
179 | | HLSFromTSTranscodeOptions | |
180 | | VideoTranscodeOptions | |
181 | | MergeAudioTranscodeOptions | |
182 | | OnlyAudioTranscodeOptions | |
183 | | QuickTranscodeOptions | |
184 | ||
185 | const builders: { | |
186 | [ type in TranscodeOptionsType ]: (c: ffmpeg.FfmpegCommand, o?: TranscodeOptions) => Promise<ffmpeg.FfmpegCommand> | ffmpeg.FfmpegCommand | |
187 | } = { | |
188 | 'quick-transcode': buildQuickTranscodeCommand, | |
189 | 'hls': buildHLSVODCommand, | |
190 | 'hls-from-ts': buildHLSVODFromTSCommand, | |
191 | 'merge-audio': buildAudioMergeCommand, | |
192 | 'only-audio': buildOnlyAudioCommand, | |
193 | 'video': buildx264VODCommand | |
194 | } | |
195 | ||
196 | async function transcode (options: TranscodeOptions) { | |
197 | logger.debug('Will run transcode.', { options }) | |
198 | ||
199 | let command = getFFmpeg(options.inputPath, 'vod') | |
200 | .output(options.outputPath) | |
201 | ||
202 | command = await builders[options.type](command, options) | |
203 | ||
204 | await runCommand({ command, job: options.job }) | |
205 | ||
206 | await fixHLSPlaylistIfNeeded(options) | |
207 | } | |
208 | ||
209 | // --------------------------------------------------------------------------- | |
210 | // Live muxing/transcoding functions | |
211 | // --------------------------------------------------------------------------- | |
212 | ||
213 | async function getLiveTranscodingCommand (options: { | |
214 | rtmpUrl: string | |
215 | ||
216 | outPath: string | |
217 | masterPlaylistName: string | |
218 | ||
219 | resolutions: number[] | |
220 | fps: number | |
221 | ||
222 | availableEncoders: AvailableEncoders | |
223 | profile: string | |
224 | }) { | |
225 | const { rtmpUrl, outPath, resolutions, fps, availableEncoders, profile, masterPlaylistName } = options | |
226 | const input = rtmpUrl | |
227 | ||
228 | const command = getFFmpeg(input, 'live') | |
229 | ||
230 | const varStreamMap: string[] = [] | |
231 | ||
232 | const complexFilter: ffmpeg.FilterSpecification[] = [ | |
233 | { | |
234 | inputs: '[v:0]', | |
235 | filter: 'split', | |
236 | options: resolutions.length, | |
237 | outputs: resolutions.map(r => `vtemp${r}`) | |
238 | } | |
239 | ] | |
240 | ||
241 | command.outputOption('-sc_threshold 0') | |
242 | ||
243 | addDefaultEncoderGlobalParams({ command }) | |
244 | ||
245 | for (let i = 0; i < resolutions.length; i++) { | |
246 | const resolution = resolutions[i] | |
247 | const resolutionFPS = computeFPS(fps, resolution) | |
248 | ||
249 | const baseEncoderBuilderParams = { | |
250 | input, | |
251 | ||
252 | availableEncoders, | |
253 | profile, | |
254 | ||
255 | fps: resolutionFPS, | |
256 | resolution, | |
257 | streamNum: i, | |
258 | videoType: 'live' as 'live' | |
259 | } | |
260 | ||
261 | { | |
262 | const streamType: StreamType = 'video' | |
263 | const builderResult = await getEncoderBuilderResult(Object.assign({}, baseEncoderBuilderParams, { streamType })) | |
264 | if (!builderResult) { | |
265 | throw new Error('No available live video encoder found') | |
266 | } | |
267 | ||
268 | command.outputOption(`-map [vout${resolution}]`) | |
269 | ||
270 | addDefaultEncoderParams({ command, encoder: builderResult.encoder, fps: resolutionFPS, streamNum: i }) | |
271 | ||
272 | logger.debug('Apply ffmpeg live video params from %s using %s profile.', builderResult.encoder, profile, builderResult) | |
273 | ||
274 | command.outputOption(`${buildStreamSuffix('-c:v', i)} ${builderResult.encoder}`) | |
275 | applyEncoderOptions(command, builderResult.result) | |
276 | ||
277 | complexFilter.push({ | |
278 | inputs: `vtemp${resolution}`, | |
279 | filter: getScaleFilter(builderResult.result), | |
280 | options: `w=-2:h=${resolution}`, | |
281 | outputs: `vout${resolution}` | |
282 | }) | |
283 | } | |
284 | ||
285 | { | |
286 | const streamType: StreamType = 'audio' | |
287 | const builderResult = await getEncoderBuilderResult(Object.assign({}, baseEncoderBuilderParams, { streamType })) | |
288 | if (!builderResult) { | |
289 | throw new Error('No available live audio encoder found') | |
290 | } | |
291 | ||
292 | command.outputOption('-map a:0') | |
293 | ||
294 | addDefaultEncoderParams({ command, encoder: builderResult.encoder, fps: resolutionFPS, streamNum: i }) | |
295 | ||
296 | logger.debug('Apply ffmpeg live audio params from %s using %s profile.', builderResult.encoder, profile, builderResult) | |
297 | ||
298 | command.outputOption(`${buildStreamSuffix('-c:a', i)} ${builderResult.encoder}`) | |
299 | applyEncoderOptions(command, builderResult.result) | |
300 | } | |
301 | ||
302 | varStreamMap.push(`v:${i},a:${i}`) | |
303 | } | |
304 | ||
305 | command.complexFilter(complexFilter) | |
306 | ||
307 | addDefaultLiveHLSParams(command, outPath, masterPlaylistName) | |
308 | ||
309 | command.outputOption('-var_stream_map', varStreamMap.join(' ')) | |
310 | ||
311 | return command | |
312 | } | |
313 | ||
314 | function getLiveMuxingCommand (rtmpUrl: string, outPath: string, masterPlaylistName: string) { | |
315 | const command = getFFmpeg(rtmpUrl, 'live') | |
316 | ||
317 | command.outputOption('-c:v copy') | |
318 | command.outputOption('-c:a copy') | |
319 | command.outputOption('-map 0:a?') | |
320 | command.outputOption('-map 0:v?') | |
321 | ||
322 | addDefaultLiveHLSParams(command, outPath, masterPlaylistName) | |
323 | ||
324 | return command | |
325 | } | |
326 | ||
327 | function buildStreamSuffix (base: string, streamNum?: number) { | |
328 | if (streamNum !== undefined) { | |
329 | return `${base}:${streamNum}` | |
330 | } | |
331 | ||
332 | return base | |
333 | } | |
334 | ||
335 | // --------------------------------------------------------------------------- | |
336 | // Default options | |
337 | // --------------------------------------------------------------------------- | |
338 | ||
339 | function addDefaultEncoderGlobalParams (options: { | |
340 | command: ffmpeg.FfmpegCommand | |
341 | }) { | |
342 | const { command } = options | |
343 | ||
344 | // avoid issues when transcoding some files: https://trac.ffmpeg.org/ticket/6375 | |
345 | command.outputOption('-max_muxing_queue_size 1024') | |
346 | // strip all metadata | |
347 | .outputOption('-map_metadata -1') | |
348 | // NOTE: b-strategy 1 - heuristic algorithm, 16 is optimal B-frames for it | |
349 | .outputOption('-b_strategy 1') | |
350 | // NOTE: Why 16: https://github.com/Chocobozzz/PeerTube/pull/774. b-strategy 2 -> B-frames<16 | |
351 | .outputOption('-bf 16') | |
352 | // allows import of source material with incompatible pixel formats (e.g. MJPEG video) | |
353 | .outputOption('-pix_fmt yuv420p') | |
354 | } | |
355 | ||
356 | function addDefaultEncoderParams (options: { | |
357 | command: ffmpeg.FfmpegCommand | |
358 | encoder: 'libx264' | string | |
359 | streamNum?: number | |
360 | fps?: number | |
361 | }) { | |
362 | const { command, encoder, fps, streamNum } = options | |
363 | ||
364 | if (encoder === 'libx264') { | |
365 | // 3.1 is the minimal resource allocation for our highest supported resolution | |
366 | command.outputOption(buildStreamSuffix('-level:v', streamNum) + ' 3.1') | |
367 | ||
368 | if (fps) { | |
369 | // Keyframe interval of 2 seconds for faster seeking and resolution switching. | |
370 | // https://streaminglearningcenter.com/blogs/whats-the-right-keyframe-interval.html | |
371 | // https://superuser.com/a/908325 | |
372 | command.outputOption(buildStreamSuffix('-g:v', streamNum) + ' ' + (fps * 2)) | |
373 | } | |
374 | } | |
375 | } | |
376 | ||
377 | function addDefaultLiveHLSParams (command: ffmpeg.FfmpegCommand, outPath: string, masterPlaylistName: string) { | |
378 | command.outputOption('-hls_time ' + VIDEO_LIVE.SEGMENT_TIME_SECONDS) | |
379 | command.outputOption('-hls_list_size ' + VIDEO_LIVE.SEGMENTS_LIST_SIZE) | |
380 | command.outputOption('-hls_flags delete_segments+independent_segments') | |
381 | command.outputOption(`-hls_segment_filename ${join(outPath, '%v-%06d.ts')}`) | |
382 | command.outputOption('-master_pl_name ' + masterPlaylistName) | |
383 | command.outputOption(`-f hls`) | |
384 | ||
385 | command.output(join(outPath, '%v.m3u8')) | |
386 | } | |
387 | ||
388 | // --------------------------------------------------------------------------- | |
389 | // Transcode VOD command builders | |
390 | // --------------------------------------------------------------------------- | |
391 | ||
392 | async function buildx264VODCommand (command: ffmpeg.FfmpegCommand, options: TranscodeOptions) { | |
393 | let fps = await getVideoFileFPS(options.inputPath) | |
394 | fps = computeFPS(fps, options.resolution) | |
395 | ||
396 | let scaleFilterValue: string | |
397 | ||
398 | if (options.resolution !== undefined) { | |
399 | scaleFilterValue = options.isPortraitMode === true | |
400 | ? `w=${options.resolution}:h=-2` | |
401 | : `w=-2:h=${options.resolution}` | |
402 | } | |
403 | ||
404 | command = await presetVideo({ command, input: options.inputPath, transcodeOptions: options, fps, scaleFilterValue }) | |
405 | ||
406 | return command | |
407 | } | |
408 | ||
409 | async function buildAudioMergeCommand (command: ffmpeg.FfmpegCommand, options: MergeAudioTranscodeOptions) { | |
410 | command = command.loop(undefined) | |
411 | ||
412 | const scaleFilterValue = getScaleCleanerValue() | |
413 | command = await presetVideo({ command, input: options.audioPath, transcodeOptions: options, scaleFilterValue }) | |
414 | ||
415 | command.outputOption('-preset:v veryfast') | |
416 | ||
417 | command = command.input(options.audioPath) | |
418 | .outputOption('-tune stillimage') | |
419 | .outputOption('-shortest') | |
420 | ||
421 | return command | |
422 | } | |
423 | ||
424 | function buildOnlyAudioCommand (command: ffmpeg.FfmpegCommand, _options: OnlyAudioTranscodeOptions) { | |
425 | command = presetOnlyAudio(command) | |
426 | ||
427 | return command | |
428 | } | |
429 | ||
430 | function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) { | |
431 | command = presetCopy(command) | |
432 | ||
433 | command = command.outputOption('-map_metadata -1') // strip all metadata | |
434 | .outputOption('-movflags faststart') | |
435 | ||
436 | return command | |
437 | } | |
438 | ||
439 | function addCommonHLSVODCommandOptions (command: ffmpeg.FfmpegCommand, outputPath: string) { | |
440 | return command.outputOption('-hls_time 4') | |
441 | .outputOption('-hls_list_size 0') | |
442 | .outputOption('-hls_playlist_type vod') | |
443 | .outputOption('-hls_segment_filename ' + outputPath) | |
444 | .outputOption('-hls_segment_type fmp4') | |
445 | .outputOption('-f hls') | |
446 | .outputOption('-hls_flags single_file') | |
447 | } | |
448 | ||
449 | async function buildHLSVODCommand (command: ffmpeg.FfmpegCommand, options: HLSTranscodeOptions) { | |
450 | const videoPath = getHLSVideoPath(options) | |
451 | ||
452 | if (options.copyCodecs) command = presetCopy(command) | |
453 | else if (options.resolution === VideoResolution.H_NOVIDEO) command = presetOnlyAudio(command) | |
454 | else command = await buildx264VODCommand(command, options) | |
455 | ||
456 | addCommonHLSVODCommandOptions(command, videoPath) | |
457 | ||
458 | return command | |
459 | } | |
460 | ||
461 | async function buildHLSVODFromTSCommand (command: ffmpeg.FfmpegCommand, options: HLSFromTSTranscodeOptions) { | |
462 | const videoPath = getHLSVideoPath(options) | |
463 | ||
464 | command.outputOption('-c copy') | |
465 | ||
466 | if (options.isAAC) { | |
467 | // Required for example when copying an AAC stream from an MPEG-TS | |
468 | // Since it's a bitstream filter, we don't need to reencode the audio | |
469 | command.outputOption('-bsf:a aac_adtstoasc') | |
470 | } | |
471 | ||
472 | addCommonHLSVODCommandOptions(command, videoPath) | |
473 | ||
474 | return command | |
475 | } | |
476 | ||
477 | async function fixHLSPlaylistIfNeeded (options: TranscodeOptions) { | |
478 | if (options.type !== 'hls' && options.type !== 'hls-from-ts') return | |
479 | ||
480 | const fileContent = await readFile(options.outputPath) | |
481 | ||
482 | const videoFileName = options.hlsPlaylist.videoFilename | |
483 | const videoFilePath = getHLSVideoPath(options) | |
484 | ||
485 | // Fix wrong mapping with some ffmpeg versions | |
486 | const newContent = fileContent.toString() | |
487 | .replace(`#EXT-X-MAP:URI="${videoFilePath}",`, `#EXT-X-MAP:URI="${videoFileName}",`) | |
488 | ||
489 | await writeFile(options.outputPath, newContent) | |
490 | } | |
491 | ||
492 | function getHLSVideoPath (options: HLSTranscodeOptions | HLSFromTSTranscodeOptions) { | |
493 | return `${dirname(options.outputPath)}/${options.hlsPlaylist.videoFilename}` | |
494 | } | |
495 | ||
496 | // --------------------------------------------------------------------------- | |
497 | // Transcoding presets | |
498 | // --------------------------------------------------------------------------- | |
499 | ||
500 | // Run encoder builder depending on available encoders | |
501 | // Try encoders by priority: if the encoder is available, run the chosen profile or fallback to the default one | |
502 | // If the default one does not exist, check the next encoder | |
503 | async function getEncoderBuilderResult (options: { | |
504 | streamType: 'video' | 'audio' | |
505 | input: string | |
506 | ||
507 | availableEncoders: AvailableEncoders | |
508 | profile: string | |
509 | ||
510 | videoType: 'vod' | 'live' | |
511 | ||
512 | resolution: number | |
513 | fps?: number | |
514 | streamNum?: number | |
515 | }) { | |
516 | const { availableEncoders, input, profile, resolution, streamType, fps, streamNum, videoType } = options | |
517 | ||
518 | const encodersToTry = availableEncoders.encodersToTry[videoType][streamType] | |
519 | const encoders = availableEncoders.available[videoType] | |
520 | ||
521 | for (const encoder of encodersToTry) { | |
522 | if (!(await checkFFmpegEncoders(availableEncoders)).get(encoder)) { | |
523 | logger.debug('Encoder %s not available in ffmpeg, skipping.', encoder) | |
524 | continue | |
525 | } | |
526 | ||
527 | if (!encoders[encoder]) { | |
528 | logger.debug('Encoder %s not available in peertube encoders, skipping.', encoder) | |
529 | continue | |
530 | } | |
531 | ||
532 | // An object containing available profiles for this encoder | |
533 | const builderProfiles: EncoderProfile<EncoderOptionsBuilder> = encoders[encoder] | |
534 | let builder = builderProfiles[profile] | |
535 | ||
536 | if (!builder) { | |
537 | logger.debug('Profile %s for encoder %s not available. Fallback to default.', profile, encoder) | |
538 | builder = builderProfiles.default | |
539 | ||
540 | if (!builder) { | |
541 | logger.debug('Default profile for encoder %s not available. Try next available encoder.', encoder) | |
542 | continue | |
543 | } | |
544 | } | |
545 | ||
546 | const result = await builder({ input, resolution, fps, streamNum }) | |
547 | ||
548 | return { | |
549 | result, | |
550 | ||
551 | // If we don't have output options, then copy the input stream | |
552 | encoder: result.copy === true | |
553 | ? 'copy' | |
554 | : encoder | |
555 | } | |
556 | } | |
557 | ||
558 | return null | |
559 | } | |
560 | ||
561 | async function presetVideo (options: { | |
562 | command: ffmpeg.FfmpegCommand | |
563 | input: string | |
564 | transcodeOptions: TranscodeOptions | |
565 | fps?: number | |
566 | scaleFilterValue?: string | |
567 | }) { | |
568 | const { command, input, transcodeOptions, fps, scaleFilterValue } = options | |
569 | ||
570 | let localCommand = command | |
571 | .format('mp4') | |
572 | .outputOption('-movflags faststart') | |
573 | ||
574 | addDefaultEncoderGlobalParams({ command }) | |
575 | ||
576 | // Audio encoder | |
577 | const parsedAudio = await getAudioStream(input) | |
578 | ||
579 | let streamsToProcess: StreamType[] = [ 'audio', 'video' ] | |
580 | ||
581 | if (!parsedAudio.audioStream) { | |
582 | localCommand = localCommand.noAudio() | |
583 | streamsToProcess = [ 'video' ] | |
584 | } | |
585 | ||
586 | for (const streamType of streamsToProcess) { | |
587 | const { profile, resolution, availableEncoders } = transcodeOptions | |
588 | ||
589 | const builderResult = await getEncoderBuilderResult({ | |
590 | streamType, | |
591 | input, | |
592 | resolution, | |
593 | availableEncoders, | |
594 | profile, | |
595 | fps, | |
596 | videoType: 'vod' as 'vod' | |
597 | }) | |
598 | ||
599 | if (!builderResult) { | |
600 | throw new Error('No available encoder found for stream ' + streamType) | |
601 | } | |
602 | ||
603 | logger.debug( | |
604 | 'Apply ffmpeg params from %s for %s stream of input %s using %s profile.', | |
605 | builderResult.encoder, streamType, input, profile, builderResult | |
606 | ) | |
607 | ||
608 | if (streamType === 'video') { | |
609 | localCommand.videoCodec(builderResult.encoder) | |
610 | ||
611 | if (scaleFilterValue) { | |
612 | localCommand.outputOption(`-vf ${getScaleFilter(builderResult.result)}=${scaleFilterValue}`) | |
613 | } | |
614 | } else if (streamType === 'audio') { | |
615 | localCommand.audioCodec(builderResult.encoder) | |
616 | } | |
617 | ||
618 | applyEncoderOptions(localCommand, builderResult.result) | |
619 | addDefaultEncoderParams({ command: localCommand, encoder: builderResult.encoder, fps }) | |
620 | } | |
621 | ||
622 | return localCommand | |
623 | } | |
624 | ||
625 | function presetCopy (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand { | |
626 | return command | |
627 | .format('mp4') | |
628 | .videoCodec('copy') | |
629 | .audioCodec('copy') | |
630 | } | |
631 | ||
632 | function presetOnlyAudio (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand { | |
633 | return command | |
634 | .format('mp4') | |
635 | .audioCodec('copy') | |
636 | .noVideo() | |
637 | } | |
638 | ||
639 | function applyEncoderOptions (command: ffmpeg.FfmpegCommand, options: EncoderOptions): ffmpeg.FfmpegCommand { | |
640 | return command | |
641 | .inputOptions(options.inputOptions ?? []) | |
642 | .outputOptions(options.outputOptions ?? []) | |
643 | } | |
644 | ||
645 | function getScaleFilter (options: EncoderOptions): string { | |
646 | if (options.scaleFilter) return options.scaleFilter.name | |
647 | ||
648 | return 'scale' | |
649 | } | |
650 | ||
651 | // --------------------------------------------------------------------------- | |
652 | // Utils | |
653 | // --------------------------------------------------------------------------- | |
654 | ||
655 | function getFFmpeg (input: string, type: 'live' | 'vod') { | |
656 | // We set cwd explicitly because ffmpeg appears to create temporary files when trancoding which fails in read-only file systems | |
657 | const command = ffmpeg(input, { | |
658 | niceness: type === 'live' ? FFMPEG_NICE.LIVE : FFMPEG_NICE.VOD, | |
659 | cwd: CONFIG.STORAGE.TMP_DIR | |
660 | }) | |
661 | ||
662 | const threads = type === 'live' | |
663 | ? CONFIG.LIVE.TRANSCODING.THREADS | |
664 | : CONFIG.TRANSCODING.THREADS | |
665 | ||
666 | if (threads > 0) { | |
667 | // If we don't set any threads ffmpeg will chose automatically | |
668 | command.outputOption('-threads ' + threads) | |
669 | } | |
670 | ||
671 | return command | |
672 | } | |
673 | ||
674 | function getFFmpegVersion () { | |
675 | return new Promise<string>((res, rej) => { | |
676 | (ffmpeg() as any)._getFfmpegPath((err, ffmpegPath) => { | |
677 | if (err) return rej(err) | |
678 | if (!ffmpegPath) return rej(new Error('Could not find ffmpeg path')) | |
679 | ||
680 | return execPromise(`${ffmpegPath} -version`) | |
681 | .then(stdout => { | |
682 | const parsed = stdout.match(/ffmpeg version .?(\d+\.\d+(\.\d+)?)/) | |
683 | if (!parsed || !parsed[1]) return rej(new Error(`Could not find ffmpeg version in ${stdout}`)) | |
684 | ||
685 | // Fix ffmpeg version that does not include patch version (4.4 for example) | |
686 | let version = parsed[1] | |
687 | if (version.match(/^\d+\.\d+$/)) { | |
688 | version += '.0' | |
689 | } | |
690 | ||
691 | return res(version) | |
692 | }) | |
693 | .catch(err => rej(err)) | |
694 | }) | |
695 | }) | |
696 | } | |
697 | ||
698 | async function runCommand (options: { | |
699 | command: ffmpeg.FfmpegCommand | |
700 | silent?: boolean // false | |
701 | job?: Job | |
702 | }) { | |
703 | const { command, silent = false, job } = options | |
704 | ||
705 | return new Promise<void>((res, rej) => { | |
706 | command.on('error', (err, stdout, stderr) => { | |
707 | if (silent !== true) logger.error('Error in ffmpeg.', { stdout, stderr }) | |
708 | ||
709 | rej(err) | |
710 | }) | |
711 | ||
712 | command.on('end', (stdout, stderr) => { | |
713 | logger.debug('FFmpeg command ended.', { stdout, stderr }) | |
714 | ||
715 | res() | |
716 | }) | |
717 | ||
718 | if (job) { | |
719 | command.on('progress', progress => { | |
720 | if (!progress.percent) return | |
721 | ||
722 | job.progress(Math.round(progress.percent)) | |
723 | .catch(err => logger.warn('Cannot set ffmpeg job progress.', { err })) | |
724 | }) | |
725 | } | |
726 | ||
727 | command.run() | |
728 | }) | |
729 | } | |
730 | ||
731 | // Avoid "height not divisible by 2" error | |
732 | function getScaleCleanerValue () { | |
733 | return 'trunc(iw/2)*2:trunc(ih/2)*2' | |
734 | } | |
735 | ||
736 | // --------------------------------------------------------------------------- | |
737 | ||
738 | export { | |
739 | getLiveTranscodingCommand, | |
740 | getLiveMuxingCommand, | |
741 | buildStreamSuffix, | |
742 | convertWebPToJPG, | |
743 | processGIF, | |
744 | generateImageFromVideoFile, | |
745 | TranscodeOptions, | |
746 | TranscodeOptionsType, | |
747 | transcode, | |
748 | runCommand, | |
749 | getFFmpegVersion, | |
750 | ||
751 | resetSupportedEncoders, | |
752 | ||
753 | // builders | |
754 | buildx264VODCommand | |
755 | } |