From 0c9668f77901e7540e2c7045eb0f2974a4842a69 Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Fri, 21 Apr 2023 14:55:10 +0200
Subject: Implement remote runner jobs in server

Move ffmpeg functions to @shared
---
 server/helpers/ffmpeg/ffmpeg-presets.ts | 156 --------------------------------
 1 file changed, 156 deletions(-)
 delete mode 100644 server/helpers/ffmpeg/ffmpeg-presets.ts

(limited to 'server/helpers/ffmpeg/ffmpeg-presets.ts')

diff --git a/server/helpers/ffmpeg/ffmpeg-presets.ts b/server/helpers/ffmpeg/ffmpeg-presets.ts
deleted file mode 100644
index d1160a4a2..000000000
--- a/server/helpers/ffmpeg/ffmpeg-presets.ts
+++ /dev/null
@@ -1,156 +0,0 @@
-import { FfmpegCommand } from 'fluent-ffmpeg'
-import { logger, loggerTagsFactory } from '@server/helpers/logger'
-import { pick } from '@shared/core-utils'
-import { AvailableEncoders, EncoderOptions } from '@shared/models'
-import { buildStreamSuffix, getScaleFilter, StreamType } from './ffmpeg-commons'
-import { getEncoderBuilderResult } from './ffmpeg-encoders'
-import { ffprobePromise, getVideoStreamBitrate, getVideoStreamDimensionsInfo, hasAudioStream } from './ffprobe-utils'
-
-const lTags = loggerTagsFactory('ffmpeg')
-
-// ---------------------------------------------------------------------------
-
-function addDefaultEncoderGlobalParams (command: FfmpegCommand) {
-  // avoid issues when transcoding some files: https://trac.ffmpeg.org/ticket/6375
-  command.outputOption('-max_muxing_queue_size 1024')
-         // strip all metadata
-         .outputOption('-map_metadata -1')
-         // allows import of source material with incompatible pixel formats (e.g. MJPEG video)
-         .outputOption('-pix_fmt yuv420p')
-}
-
-function addDefaultEncoderParams (options: {
-  command: FfmpegCommand
-  encoder: 'libx264' | string
-  fps: number
-
-  streamNum?: number
-}) {
-  const { command, encoder, fps, streamNum } = options
-
-  if (encoder === 'libx264') {
-    // 3.1 is the minimal resource allocation for our highest supported resolution
-    command.outputOption(buildStreamSuffix('-level:v', streamNum) + ' 3.1')
-
-    if (fps) {
-      // Keyframe interval of 2 seconds for faster seeking and resolution switching.
-      // https://streaminglearningcenter.com/blogs/whats-the-right-keyframe-interval.html
-      // https://superuser.com/a/908325
-      command.outputOption(buildStreamSuffix('-g:v', streamNum) + ' ' + (fps * 2))
-    }
-  }
-}
-
-// ---------------------------------------------------------------------------
-
-async function presetVOD (options: {
-  command: FfmpegCommand
-  input: string
-
-  availableEncoders: AvailableEncoders
-  profile: string
-
-  canCopyAudio: boolean
-  canCopyVideo: boolean
-
-  resolution: number
-  fps: number
-
-  scaleFilterValue?: string
-}) {
-  const { command, input, profile, resolution, fps, scaleFilterValue } = options
-
-  let localCommand = command
-    .format('mp4')
-    .outputOption('-movflags faststart')
-
-  addDefaultEncoderGlobalParams(command)
-
-  const probe = await ffprobePromise(input)
-
-  // Audio encoder
-  const bitrate = await getVideoStreamBitrate(input, probe)
-  const videoStreamDimensions = await getVideoStreamDimensionsInfo(input, probe)
-
-  let streamsToProcess: StreamType[] = [ 'audio', 'video' ]
-
-  if (!await hasAudioStream(input, probe)) {
-    localCommand = localCommand.noAudio()
-    streamsToProcess = [ 'video' ]
-  }
-
-  for (const streamType of streamsToProcess) {
-    const builderResult = await getEncoderBuilderResult({
-      ...pick(options, [ 'availableEncoders', 'canCopyAudio', 'canCopyVideo' ]),
-
-      input,
-      inputBitrate: bitrate,
-      inputRatio: videoStreamDimensions?.ratio || 0,
-
-      profile,
-      resolution,
-      fps,
-      streamType,
-
-      videoType: 'vod' as 'vod'
-    })
-
-    if (!builderResult) {
-      throw new Error('No available encoder found for stream ' + streamType)
-    }
-
-    logger.debug(
-      'Apply ffmpeg params from %s for %s stream of input %s using %s profile.',
-      builderResult.encoder, streamType, input, profile,
-      { builderResult, resolution, fps, ...lTags() }
-    )
-
-    if (streamType === 'video') {
-      localCommand.videoCodec(builderResult.encoder)
-
-      if (scaleFilterValue) {
-        localCommand.outputOption(`-vf ${getScaleFilter(builderResult.result)}=${scaleFilterValue}`)
-      }
-    } else if (streamType === 'audio') {
-      localCommand.audioCodec(builderResult.encoder)
-    }
-
-    applyEncoderOptions(localCommand, builderResult.result)
-    addDefaultEncoderParams({ command: localCommand, encoder: builderResult.encoder, fps })
-  }
-
-  return localCommand
-}
-
-function presetCopy (command: FfmpegCommand): FfmpegCommand {
-  return command
-    .format('mp4')
-    .videoCodec('copy')
-    .audioCodec('copy')
-}
-
-function presetOnlyAudio (command: FfmpegCommand): FfmpegCommand {
-  return command
-    .format('mp4')
-    .audioCodec('copy')
-    .noVideo()
-}
-
-function applyEncoderOptions (command: FfmpegCommand, options: EncoderOptions): FfmpegCommand {
-  return command
-    .inputOptions(options.inputOptions ?? [])
-    .outputOptions(options.outputOptions ?? [])
-}
-
-// ---------------------------------------------------------------------------
-
-export {
-  presetVOD,
-  presetCopy,
-  presetOnlyAudio,
-
-  addDefaultEncoderGlobalParams,
-  addDefaultEncoderParams,
-
-  applyEncoderOptions
-}
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