import * as ffmpeg from 'fluent-ffmpeg'
import { join } from 'path'
import { VideoResolution } from '../../shared/models/videos'
-import { CONFIG, VIDEO_TRANSCODING_FPS } from '../initializers'
-import { unlinkPromise } from './core-utils'
+import { CONFIG, FFMPEG_NICE, VIDEO_TRANSCODING_FPS } from '../initializers'
import { processImage } from './image-utils'
import { logger } from './logger'
import { checkFFmpegEncoders } from '../initializers/checker'
+import { remove } from 'fs-extra'
+
+function computeResolutionsToTranscode (videoFileHeight: number) {
+ const resolutionsEnabled: number[] = []
+ const configResolutions = CONFIG.TRANSCODING.RESOLUTIONS
+
+ // Put in the order we want to proceed jobs
+ const resolutions = [
+ VideoResolution.H_480P,
+ VideoResolution.H_360P,
+ VideoResolution.H_720P,
+ VideoResolution.H_240P,
+ VideoResolution.H_1080P
+ ]
+
+ for (const resolution of resolutions) {
+ if (configResolutions[ resolution + 'p' ] === true && videoFileHeight > resolution) {
+ resolutionsEnabled.push(resolution)
+ }
+ }
+
+ return resolutionsEnabled
+}
async function getVideoFileResolution (path: string) {
const videoStream = await getVideoFileStream(path)
try {
await new Promise<string>((res, rej) => {
- ffmpeg(fromPath)
+ ffmpeg(fromPath, { niceness: FFMPEG_NICE.THUMBNAIL })
.on('error', rej)
.on('end', () => res(imageName))
.thumbnail(options)
logger.error('Cannot generate image from video %s.', fromPath, { err })
try {
- await unlinkPromise(pendingImagePath)
+ await remove(pendingImagePath)
} catch (err) {
logger.debug('Cannot remove pending image path after generation error.', { err })
}
function transcode (options: TranscodeOptions) {
return new Promise<void>(async (res, rej) => {
- let command = ffmpeg(options.inputPath)
+ let command = ffmpeg(options.inputPath, { niceness: FFMPEG_NICE.TRANSCODING })
.output(options.outputPath)
- .outputOption('-threads ' + CONFIG.TRANSCODING.THREADS)
.preset(standard)
+ if (CONFIG.TRANSCODING.THREADS > 0) {
+ // if we don't set any threads ffmpeg will chose automatically
+ command = command.outputOption('-threads ' + CONFIG.TRANSCODING.THREADS)
+ }
+
let fps = await getVideoFileFPS(options.inputPath)
if (options.resolution !== undefined) {
// '?x720' or '720x?' for example
getDurationFromVideoFile,
generateImageFromVideoFile,
transcode,
- getVideoFileFPS
+ getVideoFileFPS,
+ computeResolutionsToTranscode,
+ audio
}
// ---------------------------------------------------------------------------
* and quality. Superfast and ultrafast will give you better
* performance, but then quality is noticeably worse.
*/
-function veryfast (ffmpeg) {
- ffmpeg
+function veryfast (_ffmpeg) {
+ _ffmpeg
.preset(standard)
.outputOption('-preset:v veryfast')
.outputOption(['--aq-mode=2', '--aq-strength=1.3'])
/**
* A preset optimised for a stillimage audio video
*/
-function audio (ffmpeg) {
- ffmpeg
+function audio (_ffmpeg) {
+ _ffmpeg
.preset(veryfast)
.outputOption('-tune stillimage')
}
* A toolbox to play with audio
*/
namespace audio {
- export const get = (ffmpeg, pos = 0) => {
+ export const get = (_ffmpeg, pos: number | string = 0) => {
// without position, ffprobe considers the last input only
// we make it consider the first input only
- ffmpeg
- .ffprobe(pos, (_,data) => {
- return data['streams'].find(stream => {
- return stream['codec_type'] === 'audio'
- })
+ // if you pass a file path to pos, then ffprobe acts on that file directly
+ return new Promise<{ absolutePath: string, audioStream?: any }>((res, rej) => {
+ _ffmpeg.ffprobe(pos, (err,data) => {
+ if (err) return rej(err)
+
+ if ('streams' in data) {
+ const audioStream = data['streams'].find(stream => stream['codec_type'] === 'audio')
+ if (audioStream) {
+ return res({
+ absolutePath: data.format.filename,
+ audioStream
+ })
+ }
+ }
+ return res({ absolutePath: data.format.filename })
})
+ })
}
export namespace bitrate {
- export const baseKbitrate = 384
+ const baseKbitrate = 384
const toBits = (kbits: number): number => { return kbits * 8000 }
export const aac = (bitrate: number): number => {
switch (true) {
- case bitrate > toBits(384):
+ case bitrate > toBits(baseKbitrate):
return baseKbitrate
default:
return -1 // we interpret it as a signal to copy the audio stream as is
}
export const mp3 = (bitrate: number): number => {
+ /*
+ a 192kbit/sec mp3 doesn't hold as much information as a 192kbit/sec aac.
+ That's why, when using aac, we can go to lower kbit/sec. The equivalences
+ made here are not made to be accurate, especially with good mp3 encoders.
+ */
switch (true) {
case bitrate <= toBits(192):
return 128
* As for the audio, quality '5' is the highest and ensures 96-112kbps/channel
* See https://trac.ffmpeg.org/wiki/Encode/AAC#fdk_vbr
*/
-async function standard (ffmpeg) {
- let _bitrate = audio.bitrate.baseKbitrate
- let _ffmpeg = ffmpeg
+async function standard (_ffmpeg) {
+ let localFfmpeg = _ffmpeg
.format('mp4')
.videoCodec('libx264')
.outputOption('-level 3.1') // 3.1 is the minimal ressource allocation for our highest supported resolution
.outputOption('-b_strategy 1') // NOTE: b-strategy 1 - heuristic algorythm, 16 is optimal B-frames for it
.outputOption('-bf 16') // NOTE: Why 16: https://github.com/Chocobozzz/PeerTube/pull/774. b-strategy 2 -> B-frames<16
+ .outputOption('-map_metadata -1') // strip all metadata
.outputOption('-movflags faststart')
- let _audio = audio.get(_ffmpeg)
+ const _audio = await audio.get(localFfmpeg)
- if (!_audio) return _ffmpeg.noAudio()
-
- // we try to reduce the ceiling bitrate by making rough correspondances of bitrates
- // of course this is far from perfect, but it might save some space in the end
- if (audio.bitrate[_audio['codec_name']]) {
- _bitrate = audio.bitrate[_audio['codec_name']](_audio['bit_rate'])
- if (_bitrate === -1) {
- return _ffmpeg.audioCodec('copy')
- }
+ if (!_audio.audioStream) {
+ return localFfmpeg.noAudio()
}
// we favor VBR, if a good AAC encoder is available
if ((await checkFFmpegEncoders()).get('libfdk_aac')) {
- return _ffmpeg
+ return localFfmpeg
.audioCodec('libfdk_aac')
.audioQuality(5)
}
- return _ffmpeg.audioBitrate(_bitrate)
+ // we try to reduce the ceiling bitrate by making rough correspondances of bitrates
+ // of course this is far from perfect, but it might save some space in the end
+ const audioCodecName = _audio.audioStream['codec_name']
+ let bitrate: number
+ if (audio.bitrate[audioCodecName]) {
+ bitrate = audio.bitrate[audioCodecName](_audio.audioStream['bit_rate'])
+
+ if (bitrate === -1) return localFfmpeg.audioCodec('copy')
+ }
+
+ if (bitrate !== undefined) return localFfmpeg.audioBitrate(bitrate)
+
+ return localFfmpeg
}
projects / github / Chocobozzz / PeerTube.git / blobdiff