scripts/optimize-old-videos.ts

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