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@@ -1,6 +1,6 @@
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import * as ffmpeg from 'fluent-ffmpeg'
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import { dirname, join } from 'path'
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-import { getTargetBitrate, getMaxBitrate, VideoResolution } from '../../shared/models/videos'
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+import { getMaxBitrate, getTargetBitrate, VideoResolution } from '../../shared/models/videos'
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import { FFMPEG_NICE, VIDEO_TRANSCODING_FPS } from '../initializers/constants'
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import { processImage } from './image-utils'
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import { logger } from './logger'
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@@ -8,6 +8,71 @@ import { checkFFmpegEncoders } from '../initializers/checker-before-init'
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import { readFile, remove, writeFile } from 'fs-extra'
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import { CONFIG } from '../initializers/config'
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+/**
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+ * A toolbox to play with audio
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+ */
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+namespace audio {
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+ export const get = (videoPath: string) => {
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+ // without position, ffprobe considers the last input only
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+ // we make it consider the first input only
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+ // if you pass a file path to pos, then ffprobe acts on that file directly
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+ return new Promise<{ absolutePath: string, audioStream?: any }>((res, rej) => {
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+
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+ function parseFfprobe (err: any, data: ffmpeg.FfprobeData) {
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+ if (err) return rej(err)
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+
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+ if ('streams' in data) {
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+ const audioStream = data.streams.find(stream => stream['codec_type'] === 'audio')
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+ if (audioStream) {
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+ return res({
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+ absolutePath: data.format.filename,
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+ audioStream
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+ })
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+ }
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+ }
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+
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+ return res({ absolutePath: data.format.filename })
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+ }
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+
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+ return ffmpeg.ffprobe(videoPath, parseFfprobe)
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+ })
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+ }
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+
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+ export namespace bitrate {
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+ const baseKbitrate = 384
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+
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+ const toBits = (kbits: number) => kbits * 8000
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+
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+ export const aac = (bitrate: number): number => {
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+ switch (true) {
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+ case bitrate > toBits(baseKbitrate):
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+ return baseKbitrate
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+
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+ default:
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+ return -1 // we interpret it as a signal to copy the audio stream as is
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+ }
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+ }
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+
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+ export const mp3 = (bitrate: number): number => {
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+ /*
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+ a 192kbit/sec mp3 doesn't hold as much information as a 192kbit/sec aac.
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+ That's why, when using aac, we can go to lower kbit/sec. The equivalences
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+ made here are not made to be accurate, especially with good mp3 encoders.
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+ */
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+ switch (true) {
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+ case bitrate <= toBits(192):
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+ return 128
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+
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+ case bitrate <= toBits(384):
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+ return 256
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+
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+ default:
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+ return baseKbitrate
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+ }
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+ }
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+ }
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+}
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+
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function computeResolutionsToTranscode (videoFileHeight: number) {
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const resolutionsEnabled: number[] = []
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const configResolutions = CONFIG.TRANSCODING.RESOLUTIONS
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@@ -24,7 +89,7 @@ function computeResolutionsToTranscode (videoFileHeight: number) {
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]
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for (const resolution of resolutions) {
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- if (configResolutions[ resolution + 'p' ] === true && videoFileHeight > resolution) {
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+ if (configResolutions[resolution + 'p'] === true && videoFileHeight > resolution) {
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resolutionsEnabled.push(resolution)
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}
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}
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@@ -48,9 +113,9 @@ async function getVideoStreamCodec (path: string) {
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const videoCodec = videoStream.codec_tag_string
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const baseProfileMatrix = {
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- 'High': '6400',
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- 'Main': '4D40',
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- 'Baseline': '42E0'
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+ High: '6400',
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+ Main: '4D40',
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+ Baseline: '42E0'
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}
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let baseProfile = baseProfileMatrix[videoStream.profile]
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@@ -91,7 +156,7 @@ async function getVideoFileFPS (path: string) {
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if (videoStream === null) return 0
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for (const key of [ 'avg_frame_rate', 'r_frame_rate' ]) {
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- const valuesText: string = videoStream[ key ]
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+ const valuesText: string = videoStream[key]
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if (!valuesText) continue
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const [ frames, seconds ] = valuesText.split('/')
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@@ -191,7 +256,8 @@ interface OnlyAudioTranscodeOptions extends BaseTranscodeOptions {
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type: 'only-audio'
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}
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-type TranscodeOptions = HLSTranscodeOptions
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+type TranscodeOptions =
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+ HLSTranscodeOptions
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| VideoTranscodeOptions
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| MergeAudioTranscodeOptions
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| OnlyAudioTranscodeOptions
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@@ -204,13 +270,13 @@ function transcode (options: TranscodeOptions) {
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.output(options.outputPath)
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if (options.type === 'quick-transcode') {
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- command = await buildQuickTranscodeCommand(command)
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+ command = buildQuickTranscodeCommand(command)
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} else if (options.type === 'hls') {
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command = await buildHLSCommand(command, options)
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} else if (options.type === 'merge-audio') {
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command = await buildAudioMergeCommand(command, options)
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} else if (options.type === 'only-audio') {
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- command = await buildOnlyAudioCommand(command, options)
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+ command = buildOnlyAudioCommand(command, options)
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} else {
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command = await buildx264Command(command, options)
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}
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@@ -247,17 +313,17 @@ async function canDoQuickTranscode (path: string): Promise<boolean> {
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// check video params
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if (videoStream == null) return false
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- if (videoStream[ 'codec_name' ] !== 'h264') return false
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- if (videoStream[ 'pix_fmt' ] !== 'yuv420p') return false
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+ if (videoStream['codec_name'] !== 'h264') return false
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+ if (videoStream['pix_fmt'] !== 'yuv420p') return false
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if (fps < VIDEO_TRANSCODING_FPS.MIN || fps > VIDEO_TRANSCODING_FPS.MAX) return false
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if (bitRate > getMaxBitrate(resolution.videoFileResolution, fps, VIDEO_TRANSCODING_FPS)) return false
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// check audio params (if audio stream exists)
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if (parsedAudio.audioStream) {
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- if (parsedAudio.audioStream[ 'codec_name' ] !== 'aac') return false
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+ if (parsedAudio.audioStream['codec_name'] !== 'aac') return false
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- const maxAudioBitrate = audio.bitrate[ 'aac' ](parsedAudio.audioStream[ 'bit_rate' ])
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- if (maxAudioBitrate !== -1 && parsedAudio.audioStream[ 'bit_rate' ] > maxAudioBitrate) return false
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+ const maxAudioBitrate = audio.bitrate['aac'](parsedAudio.audioStream['bit_rate'])
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+ if (maxAudioBitrate !== -1 && parsedAudio.audioStream['bit_rate'] > maxAudioBitrate) return false
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}
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return true
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@@ -333,14 +399,14 @@ async function buildAudioMergeCommand (command: ffmpeg.FfmpegCommand, options: M
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return command
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}
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-async function buildOnlyAudioCommand (command: ffmpeg.FfmpegCommand, options: OnlyAudioTranscodeOptions) {
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- command = await presetOnlyAudio(command)
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+function buildOnlyAudioCommand (command: ffmpeg.FfmpegCommand, options: OnlyAudioTranscodeOptions) {
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+ command = presetOnlyAudio(command)
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return command
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}
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-async function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) {
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- command = await presetCopy(command)
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+function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) {
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+ command = presetCopy(command)
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command = command.outputOption('-map_metadata -1') // strip all metadata
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.outputOption('-movflags faststart')
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@@ -351,7 +417,7 @@ async function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) {
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async function buildHLSCommand (command: ffmpeg.FfmpegCommand, options: HLSTranscodeOptions) {
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const videoPath = getHLSVideoPath(options)
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- if (options.copyCodecs) command = await presetCopy(command)
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+ if (options.copyCodecs) command = presetCopy(command)
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else command = await buildx264Command(command, options)
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command = command.outputOption('-hls_time 4')
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@@ -418,71 +484,6 @@ async function presetH264VeryFast (command: ffmpeg.FfmpegCommand, input: string,
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return localCommand
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}
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-/**
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- * A toolbox to play with audio
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- */
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-namespace audio {
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- export const get = (videoPath: string) => {
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- // without position, ffprobe considers the last input only
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- // we make it consider the first input only
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- // if you pass a file path to pos, then ffprobe acts on that file directly
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- return new Promise<{ absolutePath: string, audioStream?: any }>((res, rej) => {
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-
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- function parseFfprobe (err: any, data: ffmpeg.FfprobeData) {
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- if (err) return rej(err)
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-
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- if ('streams' in data) {
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- const audioStream = data.streams.find(stream => stream[ 'codec_type' ] === 'audio')
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- if (audioStream) {
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- return res({
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- absolutePath: data.format.filename,
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- audioStream
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- })
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- }
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- }
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-
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- return res({ absolutePath: data.format.filename })
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- }
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-
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- return ffmpeg.ffprobe(videoPath, parseFfprobe)
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- })
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- }
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-
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- export namespace bitrate {
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- const baseKbitrate = 384
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-
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- const toBits = (kbits: number) => kbits * 8000
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-
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- export const aac = (bitrate: number): number => {
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- switch (true) {
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- case bitrate > toBits(baseKbitrate):
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- return baseKbitrate
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-
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- default:
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- return -1 // we interpret it as a signal to copy the audio stream as is
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- }
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- }
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-
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- export const mp3 = (bitrate: number): number => {
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- /*
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- a 192kbit/sec mp3 doesn't hold as much information as a 192kbit/sec aac.
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- That's why, when using aac, we can go to lower kbit/sec. The equivalences
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- made here are not made to be accurate, especially with good mp3 encoders.
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- */
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- switch (true) {
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- case bitrate <= toBits(192):
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- return 128
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-
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- case bitrate <= toBits(384):
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- return 256
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-
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- default:
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- return baseKbitrate
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- }
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- }
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- }
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-}
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-
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/**
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* Standard profile, with variable bitrate audio and faststart.
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*
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@@ -513,10 +514,10 @@ async function presetH264 (command: ffmpeg.FfmpegCommand, input: string, resolut
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// of course this is far from perfect, but it might save some space in the end
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localCommand = localCommand.audioCodec('aac')
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- const audioCodecName = parsedAudio.audioStream[ 'codec_name' ]
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+ const audioCodecName = parsedAudio.audioStream['codec_name']
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- if (audio.bitrate[ audioCodecName ]) {
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- const bitrate = audio.bitrate[ audioCodecName ](parsedAudio.audioStream[ 'bit_rate' ])
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+ if (audio.bitrate[audioCodecName]) {
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+ const bitrate = audio.bitrate[audioCodecName](parsedAudio.audioStream['bit_rate'])
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if (bitrate !== undefined && bitrate !== -1) localCommand = localCommand.audioBitrate(bitrate)
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}
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}
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@@ -537,14 +538,14 @@ async function presetH264 (command: ffmpeg.FfmpegCommand, input: string, resolut
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return localCommand
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}
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-async function presetCopy (command: ffmpeg.FfmpegCommand): Promise<ffmpeg.FfmpegCommand> {
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+function presetCopy (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand {
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return command
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.format('mp4')
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.videoCodec('copy')
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.audioCodec('copy')
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}
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-async function presetOnlyAudio (command: ffmpeg.FfmpegCommand): Promise<ffmpeg.FfmpegCommand> {
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+function presetOnlyAudio (command: ffmpeg.FfmpegCommand): ffmpeg.FfmpegCommand {
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return command
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.format('mp4')
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.audioCodec('copy')
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