aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/lib/video-transcoding.ts
blob: c4b3425d1e86edbac831d5f10362048337f74d98 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
import { Job } from 'bull'
import { copyFile, ensureDir, move, remove, stat } from 'fs-extra'
import { basename, extname as extnameUtil, join } from 'path'
import { createTorrentAndSetInfoHash } from '@server/helpers/webtorrent'
import { MStreamingPlaylistFilesVideo, MVideoFile, MVideoWithAllFiles, MVideoWithFile } from '@server/types/models'
import { VideoResolution } from '../../shared/models/videos'
import { VideoStreamingPlaylistType } from '../../shared/models/videos/video-streaming-playlist.type'
import { transcode, TranscodeOptions, TranscodeOptionsType } from '../helpers/ffmpeg-utils'
import { canDoQuickTranscode, getDurationFromVideoFile, getMetadataFromFile, getVideoFileFPS } from '../helpers/ffprobe-utils'
import { logger } from '../helpers/logger'
import { CONFIG } from '../initializers/config'
import { HLS_STREAMING_PLAYLIST_DIRECTORY, P2P_MEDIA_LOADER_PEER_VERSION, WEBSERVER } from '../initializers/constants'
import { VideoFileModel } from '../models/video/video-file'
import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
import { updateMasterHLSPlaylist, updateSha256VODSegments } from './hls'
import { generateVideoStreamingPlaylistName, getVideoFilename, getVideoFilePath } from './video-paths'
import { VideoTranscodingProfilesManager } from './video-transcoding-profiles'

/**
 *
 * Functions that run transcoding functions, update the database, cleanup files, create torrent files...
 * Mainly called by the job queue
 *
 */

// Optimize the original video file and replace it. The resolution is not changed.
async function optimizeOriginalVideofile (video: MVideoWithFile, inputVideoFile: MVideoFile, job?: Job) {
  const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
  const newExtname = '.mp4'

  const videoInputPath = getVideoFilePath(video, inputVideoFile)
  const videoTranscodedPath = join(transcodeDirectory, video.id + '-transcoded' + newExtname)

  const transcodeType: TranscodeOptionsType = await canDoQuickTranscode(videoInputPath)
    ? 'quick-transcode'
    : 'video'

  const transcodeOptions: TranscodeOptions = {
    type: transcodeType,

    inputPath: videoInputPath,
    outputPath: videoTranscodedPath,

    availableEncoders: VideoTranscodingProfilesManager.Instance.getAvailableEncoders(),
    profile: 'default',

    resolution: inputVideoFile.resolution,

    job
  }

  // Could be very long!
  await transcode(transcodeOptions)

  try {
    await remove(videoInputPath)

    // Important to do this before getVideoFilename() to take in account the new file extension
    inputVideoFile.extname = newExtname

    const videoOutputPath = getVideoFilePath(video, inputVideoFile)

    await onWebTorrentVideoFileTranscoding(video, inputVideoFile, videoTranscodedPath, videoOutputPath)

    return transcodeType
  } catch (err) {
    // Auto destruction...
    video.destroy().catch(err => logger.error('Cannot destruct video after transcoding failure.', { err }))

    throw err
  }
}

// Transcode the original video file to a lower resolution.
async function transcodeNewWebTorrentResolution (video: MVideoWithFile, resolution: VideoResolution, isPortrait: boolean, job: Job) {
  const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
  const extname = '.mp4'

  // We are sure it's x264 in mp4 because optimizeOriginalVideofile was already executed
  const videoInputPath = getVideoFilePath(video, video.getMaxQualityFile())

  const newVideoFile = new VideoFileModel({
    resolution,
    extname,
    size: 0,
    videoId: video.id
  })
  const videoOutputPath = getVideoFilePath(video, newVideoFile)
  const videoTranscodedPath = join(transcodeDirectory, getVideoFilename(video, newVideoFile))

  const transcodeOptions = resolution === VideoResolution.H_NOVIDEO
    ? {
      type: 'only-audio' as 'only-audio',

      inputPath: videoInputPath,
      outputPath: videoTranscodedPath,

      availableEncoders: VideoTranscodingProfilesManager.Instance.getAvailableEncoders(),
      profile: 'default',

      resolution,

      job
    }
    : {
      type: 'video' as 'video',
      inputPath: videoInputPath,
      outputPath: videoTranscodedPath,

      availableEncoders: VideoTranscodingProfilesManager.Instance.getAvailableEncoders(),
      profile: 'default',

      resolution,
      isPortraitMode: isPortrait,

      job
    }

  await transcode(transcodeOptions)

  return onWebTorrentVideoFileTranscoding(video, newVideoFile, videoTranscodedPath, videoOutputPath)
}

// Merge an image with an audio file to create a video
async function mergeAudioVideofile (video: MVideoWithAllFiles, resolution: VideoResolution, job: Job) {
  const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
  const newExtname = '.mp4'

  const inputVideoFile = video.getMinQualityFile()

  const audioInputPath = getVideoFilePath(video, inputVideoFile)
  const videoTranscodedPath = join(transcodeDirectory, video.id + '-transcoded' + newExtname)

  // If the user updates the video preview during transcoding
  const previewPath = video.getPreview().getPath()
  const tmpPreviewPath = join(CONFIG.STORAGE.TMP_DIR, basename(previewPath))
  await copyFile(previewPath, tmpPreviewPath)

  const transcodeOptions = {
    type: 'merge-audio' as 'merge-audio',

    inputPath: tmpPreviewPath,
    outputPath: videoTranscodedPath,

    availableEncoders: VideoTranscodingProfilesManager.Instance.getAvailableEncoders(),
    profile: 'default',

    audioPath: audioInputPath,
    resolution,

    job
  }

  try {
    await transcode(transcodeOptions)

    await remove(audioInputPath)
    await remove(tmpPreviewPath)
  } catch (err) {
    await remove(tmpPreviewPath)
    throw err
  }

  // Important to do this before getVideoFilename() to take in account the new file extension
  inputVideoFile.extname = newExtname

  const videoOutputPath = getVideoFilePath(video, inputVideoFile)
  // ffmpeg generated a new video file, so update the video duration
  // See https://trac.ffmpeg.org/ticket/5456
  video.duration = await getDurationFromVideoFile(videoTranscodedPath)
  await video.save()

  return onWebTorrentVideoFileTranscoding(video, inputVideoFile, videoTranscodedPath, videoOutputPath)
}

// Concat TS segments from a live video to a fragmented mp4 HLS playlist
async function generateHlsPlaylistResolutionFromTS (options: {
  video: MVideoWithFile
  concatenatedTsFilePath: string
  resolution: VideoResolution
  isPortraitMode: boolean
  isAAC: boolean
}) {
  return generateHlsPlaylistCommon({
    video: options.video,
    resolution: options.resolution,
    isPortraitMode: options.isPortraitMode,
    inputPath: options.concatenatedTsFilePath,
    type: 'hls-from-ts' as 'hls-from-ts',
    isAAC: options.isAAC
  })
}

// Generate an HLS playlist from an input file, and update the master playlist
function generateHlsPlaylistResolution (options: {
  video: MVideoWithFile
  videoInputPath: string
  resolution: VideoResolution
  copyCodecs: boolean
  isPortraitMode: boolean
  job?: Job
}) {
  return generateHlsPlaylistCommon({
    video: options.video,
    resolution: options.resolution,
    copyCodecs: options.copyCodecs,
    isPortraitMode: options.isPortraitMode,
    inputPath: options.videoInputPath,
    type: 'hls' as 'hls',
    job: options.job
  })
}

function getEnabledResolutions (type: 'vod' | 'live') {
  const transcoding = type === 'vod'
    ? CONFIG.TRANSCODING
    : CONFIG.LIVE.TRANSCODING

  return Object.keys(transcoding.RESOLUTIONS)
               .filter(key => transcoding.ENABLED && transcoding.RESOLUTIONS[key] === true)
               .map(r => parseInt(r, 10))
}

// ---------------------------------------------------------------------------

export {
  generateHlsPlaylistResolution,
  generateHlsPlaylistResolutionFromTS,
  optimizeOriginalVideofile,
  transcodeNewWebTorrentResolution,
  mergeAudioVideofile,
  getEnabledResolutions
}

// ---------------------------------------------------------------------------

async function onWebTorrentVideoFileTranscoding (
  video: MVideoWithFile,
  videoFile: MVideoFile,
  transcodingPath: string,
  outputPath: string
) {
  const stats = await stat(transcodingPath)
  const fps = await getVideoFileFPS(transcodingPath)
  const metadata = await getMetadataFromFile(transcodingPath)

  await move(transcodingPath, outputPath, { overwrite: true })

  videoFile.size = stats.size
  videoFile.fps = fps
  videoFile.metadata = metadata

  await createTorrentAndSetInfoHash(video, videoFile)

  await VideoFileModel.customUpsert(videoFile, 'video', undefined)
  video.VideoFiles = await video.$get('VideoFiles')

  return video
}

async function generateHlsPlaylistCommon (options: {
  type: 'hls' | 'hls-from-ts'
  video: MVideoWithFile
  inputPath: string
  resolution: VideoResolution
  copyCodecs?: boolean
  isAAC?: boolean
  isPortraitMode: boolean

  job?: Job
}) {
  const { type, video, inputPath, resolution, copyCodecs, isPortraitMode, isAAC, job } = options

  const baseHlsDirectory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid)
  await ensureDir(join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid))

  const outputPath = join(baseHlsDirectory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(resolution))
  const videoFilename = generateVideoStreamingPlaylistName(video.uuid, resolution)

  const transcodeOptions = {
    type,

    inputPath,
    outputPath,

    availableEncoders: VideoTranscodingProfilesManager.Instance.getAvailableEncoders(),
    profile: 'default',

    resolution,
    copyCodecs,
    isPortraitMode,

    isAAC,

    hlsPlaylist: {
      videoFilename
    },

    job
  }

  await transcode(transcodeOptions)

  const playlistUrl = WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsMasterPlaylistStaticPath(video.uuid)

  const [ videoStreamingPlaylist ] = await VideoStreamingPlaylistModel.upsert({
    videoId: video.id,
    playlistUrl,
    segmentsSha256Url: WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsSha256SegmentsStaticPath(video.uuid, video.isLive),
    p2pMediaLoaderInfohashes: [],
    p2pMediaLoaderPeerVersion: P2P_MEDIA_LOADER_PEER_VERSION,

    type: VideoStreamingPlaylistType.HLS
  }, { returning: true }) as [ MStreamingPlaylistFilesVideo, boolean ]
  videoStreamingPlaylist.Video = video

  const newVideoFile = new VideoFileModel({
    resolution,
    extname: extnameUtil(videoFilename),
    size: 0,
    fps: -1,
    videoStreamingPlaylistId: videoStreamingPlaylist.id
  })

  const videoFilePath = getVideoFilePath(videoStreamingPlaylist, newVideoFile)
  const stats = await stat(videoFilePath)

  newVideoFile.size = stats.size
  newVideoFile.fps = await getVideoFileFPS(videoFilePath)
  newVideoFile.metadata = await getMetadataFromFile(videoFilePath)

  await createTorrentAndSetInfoHash(videoStreamingPlaylist, newVideoFile)

  await VideoFileModel.customUpsert(newVideoFile, 'streaming-playlist', undefined)
  videoStreamingPlaylist.VideoFiles = await videoStreamingPlaylist.$get('VideoFiles')

  videoStreamingPlaylist.p2pMediaLoaderInfohashes = VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(
    playlistUrl, videoStreamingPlaylist.VideoFiles
  )
  await videoStreamingPlaylist.save()

  video.setHLSPlaylist(videoStreamingPlaylist)

  await updateMasterHLSPlaylist(video)
  await updateSha256VODSegments(video)

  return outputPath
}