114 lines
3.1 KiB
TypeScript
114 lines
3.1 KiB
TypeScript
import { Job } from 'bull'
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import ffmpeg, { FfmpegCommand } from 'fluent-ffmpeg'
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import { execPromise } from '@server/helpers/core-utils'
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import { logger, loggerTagsFactory } from '@server/helpers/logger'
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import { CONFIG } from '@server/initializers/config'
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import { FFMPEG_NICE } from '@server/initializers/constants'
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import { EncoderOptions } from '@shared/models'
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const lTags = loggerTagsFactory('ffmpeg')
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type StreamType = 'audio' | 'video'
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function getFFmpeg (input: string, type: 'live' | 'vod') {
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// We set cwd explicitly because ffmpeg appears to create temporary files when trancoding which fails in read-only file systems
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const command = ffmpeg(input, {
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niceness: type === 'live' ? FFMPEG_NICE.LIVE : FFMPEG_NICE.VOD,
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cwd: CONFIG.STORAGE.TMP_DIR
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})
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const threads = type === 'live'
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? CONFIG.LIVE.TRANSCODING.THREADS
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: CONFIG.TRANSCODING.THREADS
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if (threads > 0) {
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// If we don't set any threads ffmpeg will chose automatically
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command.outputOption('-threads ' + threads)
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}
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return command
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}
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function getFFmpegVersion () {
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return new Promise<string>((res, rej) => {
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(ffmpeg() as any)._getFfmpegPath((err, ffmpegPath) => {
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if (err) return rej(err)
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if (!ffmpegPath) return rej(new Error('Could not find ffmpeg path'))
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return execPromise(`${ffmpegPath} -version`)
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.then(stdout => {
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const parsed = stdout.match(/ffmpeg version .?(\d+\.\d+(\.\d+)?)/)
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if (!parsed || !parsed[1]) return rej(new Error(`Could not find ffmpeg version in ${stdout}`))
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// Fix ffmpeg version that does not include patch version (4.4 for example)
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let version = parsed[1]
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if (version.match(/^\d+\.\d+$/)) {
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version += '.0'
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}
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return res(version)
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})
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.catch(err => rej(err))
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})
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})
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}
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async function runCommand (options: {
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command: FfmpegCommand
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silent?: boolean // false by default
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job?: Job
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}) {
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const { command, silent = false, job } = options
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return new Promise<void>((res, rej) => {
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let shellCommand: string
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command.on('start', cmdline => { shellCommand = cmdline })
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command.on('error', (err, stdout, stderr) => {
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if (silent !== true) logger.error('Error in ffmpeg.', { stdout, stderr, shellCommand, ...lTags() })
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rej(err)
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})
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command.on('end', (stdout, stderr) => {
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logger.debug('FFmpeg command ended.', { stdout, stderr, shellCommand, ...lTags() })
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res()
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})
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if (job) {
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command.on('progress', progress => {
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if (!progress.percent) return
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job.progress(Math.round(progress.percent))
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.catch(err => logger.warn('Cannot set ffmpeg job progress.', { err, ...lTags() }))
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})
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}
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command.run()
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})
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}
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function buildStreamSuffix (base: string, streamNum?: number) {
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if (streamNum !== undefined) {
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return `${base}:${streamNum}`
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}
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return base
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}
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function getScaleFilter (options: EncoderOptions): string {
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if (options.scaleFilter) return options.scaleFilter.name
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return 'scale'
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}
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export {
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getFFmpeg,
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getFFmpegVersion,
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runCommand,
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StreamType,
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buildStreamSuffix,
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getScaleFilter
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}
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