server/helpers/ffmpeg/ffmpeg-images.ts

   1 import ffmpeg from 'fluent-ffmpeg'
   2 import { FFMPEG_NICE } from '@server/initializers/constants'
   3 import { runCommand } from './ffmpeg-commons'
   4
   5 function convertWebPToJPG (path: string, destination: string): Promise<void> {
   6   const command = ffmpeg(path, { niceness: FFMPEG_NICE.THUMBNAIL })
   7     .output(destination)
   8
   9   return runCommand({ command, silent: true })
  10 }
  11
  12 function processGIF (
  13   path: string,
  14   destination: string,
  15   newSize: { width: number, height: number }
  16 ): Promise<void> {
  17   const command = ffmpeg(path, { niceness: FFMPEG_NICE.THUMBNAIL })
  18     .fps(20)
  19     .size(`${newSize.width}x${newSize.height}`)
  20     .output(destination)
  21
  22   return runCommand({ command })
  23 }
  24
  25 async function generateThumbnailFromVideo (fromPath: string, folder: string, imageName: string) {
  26   const pendingImageName = 'pending-' + imageName
  27
  28   const options = {
  29     filename: pendingImageName,
  30     count: 1,
  31     folder
  32   }
  33
  34   return new Promise<string>((res, rej) => {
  35     ffmpeg(fromPath, { niceness: FFMPEG_NICE.THUMBNAIL })
  36       .on('error', rej)
  37       .on('end', () => res(imageName))
  38       .thumbnail(options)
  39   })
  40 }
  41
  42 export {
  43   convertWebPToJPG,
  44   processGIF,
  45   generateThumbnailFromVideo
  46 }