scripts/optimize-old-videos.ts

   1 import { registerTSPaths } from '../server/helpers/register-ts-paths'
   2 registerTSPaths()
   3
   4 import { VIDEO_TRANSCODING_FPS } from '../server/initializers/constants'
   5 import { getDurationFromVideoFile, getVideoFileBitrate, getVideoFileFPS, getVideoFileResolution } from '../server/helpers/ffmpeg-utils'
   6 import { getMaxBitrate } from '../shared/models/videos'
   7 import { VideoModel } from '../server/models/video/video'
   8 import { optimizeVideofile } from '../server/lib/video-transcoding'
   9 import { initDatabaseModels } from '../server/initializers'
  10 import { basename, dirname, join } from 'path'
  11 import { copy, move, remove } from 'fs-extra'
  12 import { CONFIG } from '../server/initializers/config'
  13
  14 run()
  15   .then(() => process.exit(0))
  16   .catch(err => {
  17     console.error(err)
  18     process.exit(-1)
  19   })
  20
  21 let currentVideoId = null
  22 let currentFile = null
  23
  24 process.on('SIGINT', async function () {
  25   console.log('Cleaning up temp files')
  26   await remove(`${currentFile}_backup`)
  27   await remove(`${dirname(currentFile)}/${currentVideoId}-transcoded.mp4`)
  28   process.exit(0)
  29 })
  30
  31 async function run () {
  32   await initDatabaseModels(true)
  33
  34   const localVideos = await VideoModel.listLocal()
  35
  36   for (const video of localVideos) {
  37     currentVideoId = video.id
  38
  39     for (const file of video.VideoFiles) {
  40       currentFile = join(CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename(file))
  41
  42       const [ videoBitrate, fps, resolution ] = await Promise.all([
  43         getVideoFileBitrate(currentFile),
  44         getVideoFileFPS(currentFile),
  45         getVideoFileResolution(currentFile)
  46       ])
  47
  48       const maxBitrate = getMaxBitrate(resolution.videoFileResolution, fps, VIDEO_TRANSCODING_FPS)
  49       const isMaxBitrateExceeded = videoBitrate > maxBitrate
  50       if (isMaxBitrateExceeded) {
  51         console.log(
  52           'Optimizing video file %s with bitrate %s kbps (max: %s kbps)',
  53           basename(currentFile), videoBitrate / 1000, maxBitrate / 1000
  54         )
  55
  56         const backupFile = `${currentFile}_backup`
  57         await copy(currentFile, backupFile)
  58
  59         await optimizeVideofile(video, file)
  60
  61         const originalDuration = await getDurationFromVideoFile(backupFile)
  62         const newDuration = await getDurationFromVideoFile(currentFile)
  63
  64         if (originalDuration === newDuration) {
  65           console.log('Finished optimizing %s', basename(currentFile))
  66           await remove(backupFile)
  67           continue
  68         }
  69
  70         console.log('Failed to optimize %s, restoring original', basename(currentFile))
  71         await move(backupFile, currentFile, { overwrite: true })
  72         await video.createTorrentAndSetInfoHash(file)
  73         await file.save()
  74       }
  75     }
  76   }
  77
  78   console.log('Finished optimizing videos')
  79 }