server/lib/job-queue/handlers/video-transcoding.ts

   1 import * as Bull from 'bull'
   2 import { TranscodeOptionsType } from '@server/helpers/ffmpeg-utils'
   3 import { JOB_PRIORITY } from '@server/initializers/constants'
   4 import { getJobTranscodingPriorityMalus, publishAndFederateIfNeeded } from '@server/lib/video'
   5 import { getVideoFilePath } from '@server/lib/video-paths'
   6 import { MUser, MUserId, MVideoFullLight, MVideoUUID, MVideoWithFile } from '@server/types/models'
   7 import {
   8   HLSTranscodingPayload,
   9   MergeAudioTranscodingPayload,
  10   NewResolutionTranscodingPayload,
  11   OptimizeTranscodingPayload,
  12   VideoTranscodingPayload
  13 } from '../../../../shared'
  14 import { retryTransactionWrapper } from '../../../helpers/database-utils'
  15 import { computeResolutionsToTranscode } from '../../../helpers/ffprobe-utils'
  16 import { logger } from '../../../helpers/logger'
  17 import { CONFIG } from '../../../initializers/config'
  18 import { sequelizeTypescript } from '../../../initializers/database'
  19 import { VideoModel } from '../../../models/video/video'
  20 import { federateVideoIfNeeded } from '../../activitypub/videos'
  21 import { Notifier } from '../../notifier'
  22 import {
  23   generateHlsPlaylistResolution,
  24   mergeAudioVideofile,
  25   optimizeOriginalVideofile,
  26   transcodeNewWebTorrentResolution
  27 } from '../../video-transcoding'
  28 import { JobQueue } from '../job-queue'
  29 import { UserModel } from '@server/models/account/user'
  30
  31 type HandlerFunction = (job: Bull.Job, payload: VideoTranscodingPayload, video: MVideoFullLight, user: MUser) => Promise<any>
  32
  33 const handlers: { [ id: string ]: HandlerFunction } = {
  34   // Deprecated, introduced in 3.1
  35   'hls': handleHLSJob,
  36   'new-resolution-to-hls': handleHLSJob,
  37
  38   // Deprecated, introduced in 3.1
  39   'new-resolution': handleNewWebTorrentResolutionJob,
  40   'new-resolution-to-webtorrent': handleNewWebTorrentResolutionJob,
  41
  42   // Deprecated, introduced in 3.1
  43   'merge-audio': handleWebTorrentMergeAudioJob,
  44   'merge-audio-to-webtorrent': handleWebTorrentMergeAudioJob,
  45
  46   // Deprecated, introduced in 3.1
  47   'optimize': handleWebTorrentOptimizeJob,
  48   'optimize-to-webtorrent': handleWebTorrentOptimizeJob
  49 }
  50
  51 async function processVideoTranscoding (job: Bull.Job) {
  52   const payload = job.data as VideoTranscodingPayload
  53   logger.info('Processing video file in job %d.', job.id)
  54
  55   const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(payload.videoUUID)
  56   // No video, maybe deleted?
  57   if (!video) {
  58     logger.info('Do not process job %d, video does not exist.', job.id)
  59     return undefined
  60   }
  61
  62   const user = await UserModel.loadByChannelActorId(video.VideoChannel.actorId)
  63
  64   const handler = handlers[payload.type]
  65
  66   if (!handler) {
  67     throw new Error('Cannot find transcoding handler for ' + payload.type)
  68   }
  69
  70   await handler(job, payload, video, user)
  71
  72   return video
  73 }
  74
  75 // ---------------------------------------------------------------------------
  76 // Job handlers
  77 // ---------------------------------------------------------------------------
  78
  79 async function handleHLSJob (job: Bull.Job, payload: HLSTranscodingPayload, video: MVideoFullLight) {
  80   const videoFileInput = payload.copyCodecs
  81     ? video.getWebTorrentFile(payload.resolution)
  82     : video.getMaxQualityFile()
  83
  84   const videoOrStreamingPlaylist = videoFileInput.getVideoOrStreamingPlaylist()
  85   const videoInputPath = getVideoFilePath(videoOrStreamingPlaylist, videoFileInput)
  86
  87   await generateHlsPlaylistResolution({
  88     video,
  89     videoInputPath,
  90     resolution: payload.resolution,
  91     copyCodecs: payload.copyCodecs,
  92     isPortraitMode: payload.isPortraitMode || false,
  93     job
  94   })
  95
  96   await retryTransactionWrapper(onHlsPlaylistGeneration, video, payload.resolution)
  97 }
  98
  99 async function handleNewWebTorrentResolutionJob (
 100   job: Bull.Job,
 101   payload: NewResolutionTranscodingPayload,
 102   video: MVideoFullLight,
 103   user: MUserId
 104 ) {
 105   await transcodeNewWebTorrentResolution(video, payload.resolution, payload.isPortraitMode || false, job)
 106
 107   await retryTransactionWrapper(onNewWebTorrentFileResolution, video, user, payload)
 108 }
 109
 110 async function handleWebTorrentMergeAudioJob (job: Bull.Job, payload: MergeAudioTranscodingPayload, video: MVideoFullLight, user: MUserId) {
 111   await mergeAudioVideofile(video, payload.resolution, job)
 112
 113   await retryTransactionWrapper(onNewWebTorrentFileResolution, video, user, payload)
 114 }
 115
 116 async function handleWebTorrentOptimizeJob (job: Bull.Job, payload: OptimizeTranscodingPayload, video: MVideoFullLight, user: MUserId) {
 117   const transcodeType = await optimizeOriginalVideofile(video, video.getMaxQualityFile(), job)
 118
 119   await retryTransactionWrapper(onVideoFileOptimizer, video, payload, transcodeType, user)
 120 }
 121
 122 // ---------------------------------------------------------------------------
 123
 124 async function onHlsPlaylistGeneration (video: MVideoFullLight, resolution: number) {
 125   if (video === undefined) return undefined
 126
 127   const maxQualityFile = video.getMaxQualityFile()
 128
 129   // We generated the max quality HLS playlist, we don't need the webtorrent files anymore if the admin disabled it
 130   if (CONFIG.TRANSCODING.WEBTORRENT.ENABLED === false && video.hasWebTorrentFiles() && maxQualityFile.resolution === resolution) {
 131     for (const file of video.VideoFiles) {
 132       await video.removeFile(file)
 133       await file.destroy()
 134     }
 135
 136     video.VideoFiles = []
 137   }
 138
 139   return publishAndFederateIfNeeded(video)
 140 }
 141
 142 async function onVideoFileOptimizer (
 143   videoArg: MVideoWithFile,
 144   payload: OptimizeTranscodingPayload,
 145   transcodeType: TranscodeOptionsType,
 146   user: MUserId
 147 ) {
 148   if (videoArg === undefined) return undefined
 149
 150   // Outside the transaction (IO on disk)
 151   const { videoFileResolution, isPortraitMode } = await videoArg.getMaxQualityResolution()
 152
 153   const { videoDatabase, videoPublished } = await sequelizeTypescript.transaction(async t => {
 154     // Maybe the video changed in database, refresh it
 155     const videoDatabase = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoArg.uuid, t)
 156     // Video does not exist anymore
 157     if (!videoDatabase) return undefined
 158
 159     let videoPublished = false
 160
 161     // Generate HLS version of the original file
 162     const originalFileHLSPayload = Object.assign({}, payload, {
 163       isPortraitMode,
 164       resolution: videoDatabase.getMaxQualityFile().resolution,
 165       // If we quick transcoded original file, force transcoding for HLS to avoid some weird playback issues
 166       copyCodecs: transcodeType !== 'quick-transcode'
 167     })
 168     await createHlsJobIfEnabled(user, originalFileHLSPayload)
 169
 170     const hasNewResolutions = createLowerResolutionsJobs(videoDatabase, user, videoFileResolution, isPortraitMode)
 171
 172     if (!hasNewResolutions) {
 173       // No transcoding to do, it's now published
 174       videoPublished = await videoDatabase.publishIfNeededAndSave(t)
 175     }
 176
 177     await federateVideoIfNeeded(videoDatabase, payload.isNewVideo, t)
 178
 179     return { videoDatabase, videoPublished }
 180   })
 181
 182   if (payload.isNewVideo) Notifier.Instance.notifyOnNewVideoIfNeeded(videoDatabase)
 183   if (videoPublished) Notifier.Instance.notifyOnVideoPublishedAfterTranscoding(videoDatabase)
 184 }
 185
 186 async function onNewWebTorrentFileResolution (
 187   video: MVideoUUID,
 188   user: MUserId,
 189   payload?: NewResolutionTranscodingPayload | MergeAudioTranscodingPayload
 190 ) {
 191   await publishAndFederateIfNeeded(video)
 192
 193   await createHlsJobIfEnabled(user, Object.assign({}, payload, { copyCodecs: true }))
 194 }
 195
 196 // ---------------------------------------------------------------------------
 197
 198 export {
 199   processVideoTranscoding,
 200   onNewWebTorrentFileResolution
 201 }
 202
 203 // ---------------------------------------------------------------------------
 204
 205 async function createHlsJobIfEnabled (user: MUserId, payload: {
 206   videoUUID: string
 207   resolution: number
 208   isPortraitMode?: boolean
 209   copyCodecs: boolean
 210 }) {
 211   if (!payload || CONFIG.TRANSCODING.HLS.ENABLED !== true) return
 212
 213   const jobOptions = {
 214     priority: JOB_PRIORITY.TRANSCODING.NEW_RESOLUTION + await getJobTranscodingPriorityMalus(user)
 215   }
 216
 217   const hlsTranscodingPayload: HLSTranscodingPayload = {
 218     type: 'new-resolution-to-hls',
 219     videoUUID: payload.videoUUID,
 220     resolution: payload.resolution,
 221     isPortraitMode: payload.isPortraitMode,
 222     copyCodecs: payload.copyCodecs
 223   }
 224
 225   return JobQueue.Instance.createJobWithPromise({ type: 'video-transcoding', payload: hlsTranscodingPayload }, jobOptions)
 226 }
 227
 228 async function createLowerResolutionsJobs (
 229   video: MVideoFullLight,
 230   user: MUserId,
 231   videoFileResolution: number,
 232   isPortraitMode: boolean
 233 ) {
 234   // Create transcoding jobs if there are enabled resolutions
 235   const resolutionsEnabled = computeResolutionsToTranscode(videoFileResolution, 'vod')
 236   logger.info(
 237     'Resolutions computed for video %s and origin file resolution of %d.', video.uuid, videoFileResolution,
 238     { resolutions: resolutionsEnabled }
 239   )
 240
 241   if (resolutionsEnabled.length === 0) {
 242     logger.info('No transcoding jobs created for video %s (no resolutions).', video.uuid)
 243
 244     return false
 245   }
 246
 247   for (const resolution of resolutionsEnabled) {
 248     let dataInput: VideoTranscodingPayload
 249
 250     if (CONFIG.TRANSCODING.WEBTORRENT.ENABLED) {
 251       // WebTorrent will create subsequent HLS job
 252       dataInput = {
 253         type: 'new-resolution-to-webtorrent',
 254         videoUUID: video.uuid,
 255         resolution,
 256         isPortraitMode
 257       }
 258     } else if (CONFIG.TRANSCODING.HLS.ENABLED) {
 259       dataInput = {
 260         type: 'new-resolution-to-hls',
 261         videoUUID: video.uuid,
 262         resolution,
 263         isPortraitMode,
 264         copyCodecs: false
 265       }
 266     }
 267
 268     const jobOptions = {
 269       priority: JOB_PRIORITY.TRANSCODING.NEW_RESOLUTION + await getJobTranscodingPriorityMalus(user)
 270     }
 271
 272     JobQueue.Instance.createJob({ type: 'video-transcoding', payload: dataInput }, jobOptions)
 273   }
 274
 275   logger.info('Transcoding jobs created for uuid %s.', video.uuid, { resolutionsEnabled })
 276
 277   return true
 278 }