server/lib/transcoding/transcoding-resolutions.ts

   1 import { CONFIG } from '@server/initializers/config'
   2 import { toEven } from '@shared/core-utils'
   3 import { VideoResolution } from '@shared/models'
   4
   5 export function computeResolutionsToTranscode (options: {
   6   input: number
   7   type: 'vod' | 'live'
   8   includeInput: boolean
   9   strictLower: boolean
  10   hasAudio: boolean
  11 }) {
  12   const { input, type, includeInput, strictLower, hasAudio } = options
  13
  14   const configResolutions = type === 'vod'
  15     ? CONFIG.TRANSCODING.RESOLUTIONS
  16     : CONFIG.LIVE.TRANSCODING.RESOLUTIONS
  17
  18   const resolutionsEnabled = new Set<number>()
  19
  20   // Put in the order we want to proceed jobs
  21   const availableResolutions: VideoResolution[] = [
  22     VideoResolution.H_NOVIDEO,
  23     VideoResolution.H_480P,
  24     VideoResolution.H_360P,
  25     VideoResolution.H_720P,
  26     VideoResolution.H_240P,
  27     VideoResolution.H_144P,
  28     VideoResolution.H_1080P,
  29     VideoResolution.H_1440P,
  30     VideoResolution.H_4K
  31   ]
  32
  33   for (const resolution of availableResolutions) {
  34     // Resolution not enabled
  35     if (configResolutions[resolution + 'p'] !== true) continue
  36     // Too big resolution for input file
  37     if (input < resolution) continue
  38     // We only want lower resolutions than input file
  39     if (strictLower && input === resolution) continue
  40     // Audio resolutio but no audio in the video
  41     if (resolution === VideoResolution.H_NOVIDEO && !hasAudio) continue
  42
  43     resolutionsEnabled.add(resolution)
  44   }
  45
  46   if (includeInput) {
  47     // Always use an even resolution to avoid issues with ffmpeg
  48     resolutionsEnabled.add(toEven(input))
  49   }
  50
  51   return Array.from(resolutionsEnabled)
  52 }