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)}/${currentVideoId}-transcoded.mp4`)
  25   process.exit(0)
  26 })
  27
  28 async function run () {
  29   await initDatabaseModels(true)
  30
  31   const localVideos = await VideoModel.listLocal()
  32
  33   for (const video of localVideos) {
  34     currentVideoId = video.id
  35     for (const file of video.VideoFiles) {
  36       currentFile = join(CONFIG.STORAGE.VIDEOS_DIR, video.getVideoFilename(file))
  37
  38       const [ videoBitrate, fps, resolution ] = await Promise.all([
  39         getVideoFileBitrate(currentFile),
  40         getVideoFileFPS(currentFile),
  41         getVideoFileResolution(currentFile)
  42       ])
  43
  44       const maxBitrate = getMaxBitrate(resolution.videoFileResolution, fps, VIDEO_TRANSCODING_FPS)
  45       const isMaxBitrateExceeded = videoBitrate > maxBitrate
  46       if (isMaxBitrateExceeded) {
  47         console.log('Optimizing video file %s with bitrate %s kbps (max: %s kbps)',
  48           basename(currentFile), videoBitrate / 1000, maxBitrate / 1000)
  49         const backupFile = `${currentFile}_backup`
  50         await copy(currentFile, backupFile)
  51         await optimizeVideofile(video, file)
  52         const originalDuration = await getDurationFromVideoFile(backupFile)
  53         const newDuration = await getDurationFromVideoFile(currentFile)
  54         if (originalDuration === newDuration) {
  55           console.log('Finished optimizing %s', basename(currentFile))
  56           await remove(backupFile)
  57         } else {
  58           console.log('Failed to optimize %s, restoring original', basename(currentFile))
  59           move(backupFile, currentFile, { overwrite: true })
  60           await video.createTorrentAndSetInfoHash(file)
  61           await file.save()
  62         }
  63       }
  64     }
  65   }
  66
  67   console.log('Finished optimizing videos')
  68 }