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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, 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: VideoResolution | |
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 | outPath: string | |
216 | resolutions: number[] | |
217 | fps: number | |
218 | ||
219 | availableEncoders: AvailableEncoders | |
220 | profile: string | |
221 | }) { | |
222 | const { rtmpUrl, outPath, resolutions, fps, availableEncoders, profile } = options | |
223 | const input = rtmpUrl | |
224 | ||
225 | const command = getFFmpeg(input, 'live') | |
226 | ||
227 | const varStreamMap: string[] = [] | |
228 | ||
229 | command.complexFilter([ | |
230 | { | |
231 | inputs: '[v:0]', | |
232 | filter: 'split', | |
233 | options: resolutions.length, | |
234 | outputs: resolutions.map(r => `vtemp${r}`) | |
235 | }, | |
236 | ||
237 | ...resolutions.map(r => ({ | |
238 | inputs: `vtemp${r}`, | |
239 | filter: 'scale', | |
240 | options: `w=-2:h=${r}`, | |
241 | outputs: `vout${r}` | |
242 | })) | |
243 | ]) | |
244 | ||
245 | command.outputOption('-preset superfast') | |
246 | command.outputOption('-sc_threshold 0') | |
247 | ||
248 | addDefaultEncoderGlobalParams({ command }) | |
249 | ||
250 | for (let i = 0; i < resolutions.length; i++) { | |
251 | const resolution = resolutions[i] | |
252 | const resolutionFPS = computeFPS(fps, resolution) | |
253 | ||
254 | const baseEncoderBuilderParams = { | |
255 | input, | |
256 | ||
257 | availableEncoders, | |
258 | profile, | |
259 | ||
260 | fps: resolutionFPS, | |
261 | resolution, | |
262 | streamNum: i, | |
263 | videoType: 'live' as 'live' | |
264 | } | |
265 | ||
266 | { | |
267 | const streamType: StreamType = 'video' | |
268 | const builderResult = await getEncoderBuilderResult(Object.assign({}, baseEncoderBuilderParams, { streamType })) | |
269 | if (!builderResult) { | |
270 | throw new Error('No available live video encoder found') | |
271 | } | |
272 | ||
273 | command.outputOption(`-map [vout${resolution}]`) | |
274 | ||
275 | addDefaultEncoderParams({ command, encoder: builderResult.encoder, fps: resolutionFPS, streamNum: i }) | |
276 | ||
277 | logger.debug('Apply ffmpeg live video params from %s using %s profile.', builderResult.encoder, profile, builderResult) | |
278 | ||
279 | command.outputOption(`${buildStreamSuffix('-c:v', i)} ${builderResult.encoder}`) | |
280 | command.addOutputOptions(builderResult.result.outputOptions) | |
281 | } | |
282 | ||
283 | { | |
284 | const streamType: StreamType = 'audio' | |
285 | const builderResult = await getEncoderBuilderResult(Object.assign({}, baseEncoderBuilderParams, { streamType })) | |
286 | if (!builderResult) { | |
287 | throw new Error('No available live audio encoder found') | |
288 | } | |
289 | ||
290 | command.outputOption('-map a:0') | |
291 | ||
292 | addDefaultEncoderParams({ command, encoder: builderResult.encoder, fps: resolutionFPS, streamNum: i }) | |
293 | ||
294 | logger.debug('Apply ffmpeg live audio params from %s using %s profile.', builderResult.encoder, profile, builderResult) | |
295 | ||
296 | command.outputOption(`${buildStreamSuffix('-c:a', i)} ${builderResult.encoder}`) | |
297 | command.addOutputOptions(builderResult.result.outputOptions) | |
298 | } | |
299 | ||
300 | varStreamMap.push(`v:${i},a:${i}`) | |
301 | } | |
302 | ||
303 | addDefaultLiveHLSParams(command, outPath) | |
304 | ||
305 | command.outputOption('-var_stream_map', varStreamMap.join(' ')) | |
306 | ||
307 | return command | |
308 | } | |
309 | ||
310 | function getLiveMuxingCommand (rtmpUrl: string, outPath: string) { | |
311 | const command = getFFmpeg(rtmpUrl, 'live') | |
312 | ||
313 | command.outputOption('-c:v copy') | |
314 | command.outputOption('-c:a copy') | |
315 | command.outputOption('-map 0:a?') | |
316 | command.outputOption('-map 0:v?') | |
317 | ||
318 | addDefaultLiveHLSParams(command, outPath) | |
319 | ||
320 | return command | |
321 | } | |
322 | ||
323 | function buildStreamSuffix (base: string, streamNum?: number) { | |
324 | if (streamNum !== undefined) { | |
325 | return `${base}:${streamNum}` | |
326 | } | |
327 | ||
328 | return base | |
329 | } | |
330 | ||
331 | // --------------------------------------------------------------------------- | |
332 | // Default options | |
333 | // --------------------------------------------------------------------------- | |
334 | ||
335 | function addDefaultEncoderGlobalParams (options: { | |
336 | command: ffmpeg.FfmpegCommand | |
337 | }) { | |
338 | const { command } = options | |
339 | ||
340 | // avoid issues when transcoding some files: https://trac.ffmpeg.org/ticket/6375 | |
341 | command.outputOption('-max_muxing_queue_size 1024') | |
342 | // strip all metadata | |
343 | .outputOption('-map_metadata -1') | |
344 | // NOTE: b-strategy 1 - heuristic algorithm, 16 is optimal B-frames for it | |
345 | .outputOption('-b_strategy 1') | |
346 | // NOTE: Why 16: https://github.com/Chocobozzz/PeerTube/pull/774. b-strategy 2 -> B-frames<16 | |
347 | .outputOption('-bf 16') | |
348 | // allows import of source material with incompatible pixel formats (e.g. MJPEG video) | |
349 | .outputOption('-pix_fmt yuv420p') | |
350 | } | |
351 | ||
352 | function addDefaultEncoderParams (options: { | |
353 | command: ffmpeg.FfmpegCommand | |
354 | encoder: 'libx264' | string | |
355 | streamNum?: number | |
356 | fps?: number | |
357 | }) { | |
358 | const { command, encoder, fps, streamNum } = options | |
359 | ||
360 | if (encoder === 'libx264') { | |
361 | // 3.1 is the minimal resource allocation for our highest supported resolution | |
362 | command.outputOption(buildStreamSuffix('-level:v', streamNum) + ' 3.1') | |
363 | ||
364 | if (fps) { | |
365 | // Keyframe interval of 2 seconds for faster seeking and resolution switching. | |
366 | // https://streaminglearningcenter.com/blogs/whats-the-right-keyframe-interval.html | |
367 | // https://superuser.com/a/908325 | |
368 | command.outputOption(buildStreamSuffix('-g:v', streamNum) + ' ' + (fps * 2)) | |
369 | } | |
370 | } | |
371 | } | |
372 | ||
373 | function addDefaultLiveHLSParams (command: ffmpeg.FfmpegCommand, outPath: string) { | |
374 | command.outputOption('-hls_time ' + VIDEO_LIVE.SEGMENT_TIME_SECONDS) | |
375 | command.outputOption('-hls_list_size ' + VIDEO_LIVE.SEGMENTS_LIST_SIZE) | |
376 | command.outputOption('-hls_flags delete_segments+independent_segments') | |
377 | command.outputOption(`-hls_segment_filename ${join(outPath, '%v-%06d.ts')}`) | |
378 | command.outputOption('-master_pl_name master.m3u8') | |
379 | command.outputOption(`-f hls`) | |
380 | ||
381 | command.output(join(outPath, '%v.m3u8')) | |
382 | } | |
383 | ||
384 | // --------------------------------------------------------------------------- | |
385 | // Transcode VOD command builders | |
386 | // --------------------------------------------------------------------------- | |
387 | ||
388 | async function buildx264VODCommand (command: ffmpeg.FfmpegCommand, options: TranscodeOptions) { | |
389 | let fps = await getVideoFileFPS(options.inputPath) | |
390 | fps = computeFPS(fps, options.resolution) | |
391 | ||
392 | command = await presetVideo(command, options.inputPath, options, fps) | |
393 | ||
394 | if (options.resolution !== undefined) { | |
395 | // '?x720' or '720x?' for example | |
396 | const size = options.isPortraitMode === true | |
397 | ? `${options.resolution}x?` | |
398 | : `?x${options.resolution}` | |
399 | ||
400 | command = command.size(size) | |
401 | } | |
402 | ||
403 | return command | |
404 | } | |
405 | ||
406 | async function buildAudioMergeCommand (command: ffmpeg.FfmpegCommand, options: MergeAudioTranscodeOptions) { | |
407 | command = command.loop(undefined) | |
408 | ||
409 | command = await presetVideo(command, options.audioPath, options) | |
410 | ||
411 | command.outputOption('-preset:v veryfast') | |
412 | ||
413 | command = command.input(options.audioPath) | |
414 | .videoFilter('scale=trunc(iw/2)*2:trunc(ih/2)*2') // Avoid "height not divisible by 2" error | |
415 | .outputOption('-tune stillimage') | |
416 | .outputOption('-shortest') | |
417 | ||
418 | return command | |
419 | } | |
420 | ||
421 | function buildOnlyAudioCommand (command: ffmpeg.FfmpegCommand, _options: OnlyAudioTranscodeOptions) { | |
422 | command = presetOnlyAudio(command) | |
423 | ||
424 | return command | |
425 | } | |
426 | ||
427 | function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) { | |
428 | command = presetCopy(command) | |
429 | ||
430 | command = command.outputOption('-map_metadata -1') // strip all metadata | |
431 | .outputOption('-movflags faststart') | |
432 | ||
433 | return command | |
434 | } | |
435 | ||
436 | function addCommonHLSVODCommandOptions (command: ffmpeg.FfmpegCommand, outputPath: string) { | |
437 | return command.outputOption('-hls_time 4') | |
438 | .outputOption('-hls_list_size 0') | |
439 | .outputOption('-hls_playlist_type vod') | |
440 | .outputOption('-hls_segment_filename ' + outputPath) | |
441 | .outputOption('-hls_segment_type fmp4') | |
442 | .outputOption('-f hls') | |
443 | .outputOption('-hls_flags single_file') | |
444 | } | |
445 | ||
446 | async function buildHLSVODCommand (command: ffmpeg.FfmpegCommand, options: HLSTranscodeOptions) { | |
447 | const videoPath = getHLSVideoPath(options) | |
448 | ||
449 | if (options.copyCodecs) command = presetCopy(command) | |
450 | else if (options.resolution === VideoResolution.H_NOVIDEO) command = presetOnlyAudio(command) | |
451 | else command = await buildx264VODCommand(command, options) | |
452 | ||
453 | addCommonHLSVODCommandOptions(command, videoPath) | |
454 | ||
455 | return command | |
456 | } | |
457 | ||
458 | async function buildHLSVODFromTSCommand (command: ffmpeg.FfmpegCommand, options: HLSFromTSTranscodeOptions) { | |
459 | const videoPath = getHLSVideoPath(options) | |
460 | ||
461 | command.outputOption('-c copy') | |
462 | ||
463 | if (options.isAAC) { | |
464 | // Required for example when copying an AAC stream from an MPEG-TS | |
465 | // Since it's a bitstream filter, we don't need to reencode the audio | |
466 | command.outputOption('-bsf:a aac_adtstoasc') | |
467 | } | |
468 | ||
469 | addCommonHLSVODCommandOptions(command, videoPath) | |
470 | ||
471 | return command | |
472 | } | |
473 | ||
474 | async function fixHLSPlaylistIfNeeded (options: TranscodeOptions) { | |
475 | if (options.type !== 'hls' && options.type !== 'hls-from-ts') return | |
476 | ||
477 | const fileContent = await readFile(options.outputPath) | |
478 | ||
479 | const videoFileName = options.hlsPlaylist.videoFilename | |
480 | const videoFilePath = getHLSVideoPath(options) | |
481 | ||
482 | // Fix wrong mapping with some ffmpeg versions | |
483 | const newContent = fileContent.toString() | |
484 | .replace(`#EXT-X-MAP:URI="${videoFilePath}",`, `#EXT-X-MAP:URI="${videoFileName}",`) | |
485 | ||
486 | await writeFile(options.outputPath, newContent) | |
487 | } | |
488 | ||
489 | function getHLSVideoPath (options: HLSTranscodeOptions | HLSFromTSTranscodeOptions) { | |
490 | return `${dirname(options.outputPath)}/${options.hlsPlaylist.videoFilename}` | |
491 | } | |
492 | ||
493 | // --------------------------------------------------------------------------- | |
494 | // Transcoding presets | |
495 | // --------------------------------------------------------------------------- | |
496 | ||
497 | // Run encoder builder depending on available encoders | |
498 | // Try encoders by priority: if the encoder is available, run the chosen profile or fallback to the default one | |
499 | // If the default one does not exist, check the next encoder | |
500 | async function getEncoderBuilderResult (options: { | |
501 | streamType: 'video' | 'audio' | |
502 | input: string | |
503 | ||
504 | availableEncoders: AvailableEncoders | |
505 | profile: string | |
506 | ||
507 | videoType: 'vod' | 'live' | |
508 | ||
509 | resolution: number | |
510 | fps?: number | |
511 | streamNum?: number | |
512 | }) { | |
513 | const { availableEncoders, input, profile, resolution, streamType, fps, streamNum, videoType } = options | |
514 | ||
515 | const encodersToTry = availableEncoders.encodersToTry[videoType][streamType] | |
516 | const encoders = availableEncoders.available[videoType] | |
517 | ||
518 | for (const encoder of encodersToTry) { | |
519 | if (!(await checkFFmpegEncoders(availableEncoders)).get(encoder)) { | |
520 | logger.debug('Encoder %s not available in ffmpeg, skipping.', encoder) | |
521 | continue | |
522 | } | |
523 | ||
524 | if (!encoders[encoder]) { | |
525 | logger.debug('Encoder %s not available in peertube encoders, skipping.', encoder) | |
526 | continue | |
527 | } | |
528 | ||
529 | // An object containing available profiles for this encoder | |
530 | const builderProfiles: EncoderProfile<EncoderOptionsBuilder> = encoders[encoder] | |
531 | let builder = builderProfiles[profile] | |
532 | ||
533 | if (!builder) { | |
534 | logger.debug('Profile %s for encoder %s not available. Fallback to default.', profile, encoder) | |
535 | builder = builderProfiles.default | |
536 | ||
537 | if (!builder) { | |
538 | logger.debug('Default profile for encoder %s not available. Try next available encoder.', encoder) | |
539 | continue | |
540 | } | |
541 | } | |
542 | ||
543 | const result = await builder({ input, resolution: resolution, fps, streamNum }) | |
544 | ||
545 | return { | |
546 | result, | |
547 | ||
548 | // If we don't have output options, then copy the input stream | |
549 | encoder: result.copy === true | |
550 | ? 'copy' | |
551 | : encoder | |
552 | } | |
553 | } | |
554 | ||
555 | return null | |
556 | } | |
557 | ||
558 | async function presetVideo ( | |
559 | command: ffmpeg.FfmpegCommand, | |
560 | input: string, | |
561 | transcodeOptions: TranscodeOptions, | |
562 | fps?: number | |
563 | ) { | |
564 | let localCommand = command | |
565 | .format('mp4') | |
566 | .outputOption('-movflags faststart') | |
567 | ||
568 | addDefaultEncoderGlobalParams({ command }) | |
569 | ||
570 | // Audio encoder | |
571 | const parsedAudio = await getAudioStream(input) | |
572 | ||
573 | let streamsToProcess: StreamType[] = [ 'audio', 'video' ] | |
574 | ||
575 | if (!parsedAudio.audioStream) { | |
576 | localCommand = localCommand.noAudio() | |
577 | streamsToProcess = [ 'video' ] | |
578 | } | |
579 | ||
580 | for (const streamType of streamsToProcess) { | |
581 | const { profile, resolution, availableEncoders } = transcodeOptions | |
582 | ||
583 | const builderResult = await getEncoderBuilderResult({ | |
584 | streamType, | |
585 | input, | |
586 | resolution, | |
587 | availableEncoders, | |
588 | profile, | |
589 | fps, | |
590 | videoType: 'vod' as 'vod' | |
591 | }) | |
592 | ||
593 | if (!builderResult) { | |
594 | throw new Error('No available encoder found for stream ' + streamType) | |
595 | } | |
596 | ||
597 | logger.debug( | |
598 | 'Apply ffmpeg params from %s for %s stream of input %s using %s profile.', | |
599 | builderResult.encoder, streamType, input, profile, builderResult | |
600 | ) | |
601 | ||
602 | if (streamType === 'video') { | |
603 | localCommand.videoCodec(builderResult.encoder) | |
604 | } else if (streamType === 'audio') { | |
605 | localCommand.audioCodec(builderResult.encoder) | |
606 | } | |
607 | ||
608 | command.addOutputOptions(builderResult.result.outputOptions) | |
609 | addDefaultEncoderParams({ command: localCommand, encoder: builderResult.encoder, fps }) | |
610 | } | |
611 | ||
612 | return localCommand | |
613 | } | |
614 | ||
615 | function presetCopy (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand { | |
616 | return command | |
617 | .format('mp4') | |
618 | .videoCodec('copy') | |
619 | .audioCodec('copy') | |
620 | } | |
621 | ||
622 | function presetOnlyAudio (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand { | |
623 | return command | |
624 | .format('mp4') | |
625 | .audioCodec('copy') | |
626 | .noVideo() | |
627 | } | |
628 | ||
629 | // --------------------------------------------------------------------------- | |
630 | // Utils | |
631 | // --------------------------------------------------------------------------- | |
632 | ||
633 | function getFFmpeg (input: string, type: 'live' | 'vod') { | |
634 | // We set cwd explicitly because ffmpeg appears to create temporary files when trancoding which fails in read-only file systems | |
635 | const command = ffmpeg(input, { | |
636 | niceness: type === 'live' ? FFMPEG_NICE.LIVE : FFMPEG_NICE.VOD, | |
637 | cwd: CONFIG.STORAGE.TMP_DIR | |
638 | }) | |
639 | ||
640 | const threads = type === 'live' | |
641 | ? CONFIG.LIVE.TRANSCODING.THREADS | |
642 | : CONFIG.TRANSCODING.THREADS | |
643 | ||
644 | if (threads > 0) { | |
645 | // If we don't set any threads ffmpeg will chose automatically | |
646 | command.outputOption('-threads ' + threads) | |
647 | } | |
648 | ||
649 | return command | |
650 | } | |
651 | ||
652 | function getFFmpegVersion () { | |
653 | return new Promise<string>((res, rej) => { | |
654 | (ffmpeg() as any)._getFfmpegPath((err, ffmpegPath) => { | |
655 | if (err) return rej(err) | |
656 | if (!ffmpegPath) return rej(new Error('Could not find ffmpeg path')) | |
657 | ||
658 | return execPromise(`${ffmpegPath} -version`) | |
659 | .then(stdout => { | |
660 | const parsed = stdout.match(/ffmpeg version .(\d+\.\d+\.\d+)/) | |
661 | if (!parsed || !parsed[1]) return rej(new Error(`Could not find ffmpeg version in ${stdout}`)) | |
662 | ||
663 | return res(parsed[1]) | |
664 | }) | |
665 | .catch(err => rej(err)) | |
666 | }) | |
667 | }) | |
668 | } | |
669 | ||
670 | async function runCommand (options: { | |
671 | command: ffmpeg.FfmpegCommand | |
672 | silent?: boolean // false | |
673 | job?: Job | |
674 | }) { | |
675 | const { command, silent = false, job } = options | |
676 | ||
677 | return new Promise<void>((res, rej) => { | |
678 | command.on('error', (err, stdout, stderr) => { | |
679 | if (silent !== true) logger.error('Error in ffmpeg.', { stdout, stderr }) | |
680 | ||
681 | rej(err) | |
682 | }) | |
683 | ||
684 | command.on('end', (stdout, stderr) => { | |
685 | logger.debug('FFmpeg command ended.', { stdout, stderr }) | |
686 | ||
687 | res() | |
688 | }) | |
689 | ||
690 | if (job) { | |
691 | command.on('progress', progress => { | |
692 | if (!progress.percent) return | |
693 | ||
694 | job.progress(Math.round(progress.percent)) | |
695 | .catch(err => logger.warn('Cannot set ffmpeg job progress.', { err })) | |
696 | }) | |
697 | } | |
698 | ||
699 | command.run() | |
700 | }) | |
701 | } | |
702 | ||
703 | // --------------------------------------------------------------------------- | |
704 | ||
705 | export { | |
706 | getLiveTranscodingCommand, | |
707 | getLiveMuxingCommand, | |
708 | buildStreamSuffix, | |
709 | convertWebPToJPG, | |
710 | processGIF, | |
711 | generateImageFromVideoFile, | |
712 | TranscodeOptions, | |
713 | TranscodeOptionsType, | |
714 | transcode, | |
715 | runCommand, | |
716 | getFFmpegVersion, | |
717 | ||
718 | resetSupportedEncoders, | |
719 | ||
720 | // builders | |
721 | buildx264VODCommand | |
722 | } |