scripts/optimize-old-videos.ts

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