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Code Issues Releases Wiki Activity

Add latency setting support

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Chocobozzz 2022-03-04 13:40:02 +01:00 • committed by Chocobozzz
parent 01dd04cd5a
commit f443a74649
42 changed files with 516 additions and 81 deletions
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39
server/helpers/ffmpeg/ffmpeg-live.ts
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@ -1,7 +1,7 @@
import { FfmpegCommand, FilterSpecification } from 'fluent-ffmpeg'
import { join } from 'path'
import { VIDEO_LIVE } from '@server/initializers/constants'
import { AvailableEncoders } from '@shared/models'
import { AvailableEncoders, LiveVideoLatencyMode } from '@shared/models'
import { logger, loggerTagsFactory } from '../logger'
import { buildStreamSuffix, getFFmpeg, getScaleFilter, StreamType } from './ffmpeg-commons'
import { getEncoderBuilderResult } from './ffmpeg-encoders'
@ -15,6 +15,7 @@ async function getLiveTranscodingCommand (options: {
outPath: string
masterPlaylistName: string
latencyMode: LiveVideoLatencyMode
resolutions: number[]
@ -26,7 +27,7 @@ async function getLiveTranscodingCommand (options: {
availableEncoders: AvailableEncoders
profile: string
}) {
const { inputUrl, outPath, resolutions, fps, bitrate, availableEncoders, profile, masterPlaylistName, ratio } = options
const { inputUrl, outPath, resolutions, fps, bitrate, availableEncoders, profile, masterPlaylistName, ratio, latencyMode } = options
const command = getFFmpeg(inputUrl, 'live')
@ -120,14 +121,21 @@ async function getLiveTranscodingCommand (options: {
command.complexFilter(complexFilter)
addDefaultLiveHLSParams(command, outPath, masterPlaylistName)
addDefaultLiveHLSParams({ command, outPath, masterPlaylistName, latencyMode })
command.outputOption('-var_stream_map', varStreamMap.join(' '))
return command
}
function getLiveMuxingCommand (inputUrl: string, outPath: string, masterPlaylistName: string) {
function getLiveMuxingCommand (options: {
inputUrl: string
outPath: string
masterPlaylistName: string
latencyMode: LiveVideoLatencyMode
}) {
const { inputUrl, outPath, masterPlaylistName, latencyMode } = options
const command = getFFmpeg(inputUrl, 'live')
command.outputOption('-c:v copy')
@ -135,22 +143,39 @@ function getLiveMuxingCommand (inputUrl: string, outPath: string, masterPlaylist
command.outputOption('-map 0:a?')
command.outputOption('-map 0:v?')
addDefaultLiveHLSParams(command, outPath, masterPlaylistName)
addDefaultLiveHLSParams({ command, outPath, masterPlaylistName, latencyMode })
return command
}
function getLiveSegmentTime (latencyMode: LiveVideoLatencyMode) {
if (latencyMode === LiveVideoLatencyMode.SMALL_LATENCY) {
return VIDEO_LIVE.SEGMENT_TIME_SECONDS.SMALL_LATENCY
}
return VIDEO_LIVE.SEGMENT_TIME_SECONDS.DEFAULT_LATENCY
}
// ---------------------------------------------------------------------------
export {
getLiveSegmentTime,
getLiveTranscodingCommand,
getLiveMuxingCommand
}
// ---------------------------------------------------------------------------
function addDefaultLiveHLSParams (command: FfmpegCommand, outPath: string, masterPlaylistName: string) {
command.outputOption('-hls_time ' + VIDEO_LIVE.SEGMENT_TIME_SECONDS)
function addDefaultLiveHLSParams (options: {
command: FfmpegCommand
outPath: string
masterPlaylistName: string
latencyMode: LiveVideoLatencyMode
}) {
const { command, outPath, masterPlaylistName, latencyMode } = options
command.outputOption('-hls_time ' + getLiveSegmentTime(latencyMode))
command.outputOption('-hls_list_size ' + VIDEO_LIVE.SEGMENTS_LIST_SIZE)
command.outputOption('-hls_flags delete_segments+independent_segments')
command.outputOption(`-hls_segment_filename ${join(outPath, '%v-%06d.ts')}`)