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Copy video/audio codec for HLS

This commit is contained in:
Chocobozzz 2019-04-08 10:03:23 +02:00
parent 4e10f4b2f1
commit 14aed608f5
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GPG Key ID: 583A612D890159BE
1 changed files with 59 additions and 37 deletions
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96
server/helpers/ffmpeg-utils.ts
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@ -130,51 +130,20 @@ type TranscodeOptions = {
function transcode (options: TranscodeOptions) {
return new Promise<void>(async (res, rej) => {
try {
let fps = await getVideoFileFPS(options.inputPath)
// On small/medium resolutions, limit FPS
if (
options.resolution !== undefined &&
options.resolution < VIDEO_TRANSCODING_FPS.KEEP_ORIGIN_FPS_RESOLUTION_MIN &&
fps > VIDEO_TRANSCODING_FPS.AVERAGE
) {
fps = VIDEO_TRANSCODING_FPS.AVERAGE
}
let command = ffmpeg(options.inputPath, { niceness: FFMPEG_NICE.TRANSCODING })
.output(options.outputPath)
command = await presetH264(command, options.resolution, fps)
if (options.hlsPlaylist) {
command = await buildHLSCommand(command, options)
} else {
command = await buildx264Command(command, options)
}
if (CONFIG.TRANSCODING.THREADS > 0) {
// if we don't set any threads ffmpeg will chose automatically
command = command.outputOption('-threads ' + CONFIG.TRANSCODING.THREADS)
}
if (options.resolution !== undefined) {
// '?x720' or '720x?' for example
const size = options.isPortraitMode === true ? `${options.resolution}x?` : `?x${options.resolution}`
command = command.size(size)
}
if (fps) {
// Hard FPS limits
if (fps > VIDEO_TRANSCODING_FPS.MAX) fps = VIDEO_TRANSCODING_FPS.MAX
else if (fps < VIDEO_TRANSCODING_FPS.MIN) fps = VIDEO_TRANSCODING_FPS.MIN
command = command.withFPS(fps)
}
if (options.hlsPlaylist) {
const videoPath = getHLSVideoPath(options)
command = command.outputOption('-hls_time 4')
.outputOption('-hls_list_size 0')
.outputOption('-hls_playlist_type vod')
.outputOption('-hls_segment_filename ' + videoPath)
.outputOption('-hls_segment_type fmp4')
.outputOption('-f hls')
.outputOption('-hls_flags single_file')
}
command
.on('error', (err, stdout, stderr) => {
logger.error('Error in transcoding job.', { stdout, stderr })
@ -208,6 +177,52 @@ export {
// ---------------------------------------------------------------------------
async function buildx264Command (command: ffmpeg.FfmpegCommand, options: TranscodeOptions) {
let fps = await getVideoFileFPS(options.inputPath)
// On small/medium resolutions, limit FPS
if (
options.resolution !== undefined &&
options.resolution < VIDEO_TRANSCODING_FPS.KEEP_ORIGIN_FPS_RESOLUTION_MIN &&
fps > VIDEO_TRANSCODING_FPS.AVERAGE
) {
fps = VIDEO_TRANSCODING_FPS.AVERAGE
}
command = await presetH264(command, options.resolution, fps)
if (options.resolution !== undefined) {
// '?x720' or '720x?' for example
const size = options.isPortraitMode === true ? `${options.resolution}x?` : `?x${options.resolution}`
command = command.size(size)
}
if (fps) {
// Hard FPS limits
if (fps > VIDEO_TRANSCODING_FPS.MAX) fps = VIDEO_TRANSCODING_FPS.MAX
else if (fps < VIDEO_TRANSCODING_FPS.MIN) fps = VIDEO_TRANSCODING_FPS.MIN
command = command.withFPS(fps)
}
return command
}
async function buildHLSCommand (command: ffmpeg.FfmpegCommand, options: TranscodeOptions) {
const videoPath = getHLSVideoPath(options)
command = await presetCopy(command)
command = command.outputOption('-hls_time 4')
.outputOption('-hls_list_size 0')
.outputOption('-hls_playlist_type vod')
.outputOption('-hls_segment_filename ' + videoPath)
.outputOption('-hls_segment_type fmp4')
.outputOption('-f hls')
.outputOption('-hls_flags single_file')
return command
}
function getHLSVideoPath (options: TranscodeOptions) {
return `${dirname(options.outputPath)}/${options.hlsPlaylist.videoFilename}`
}
@ -397,3 +412,10 @@ async function presetH264 (command: ffmpeg.FfmpegCommand, resolution: VideoResol
return localCommand
}
async function presetCopy (command: ffmpeg.FfmpegCommand): Promise<ffmpeg.FfmpegCommand> {
return command
.format('mp4')
.videoCodec('copy')
.audioCodec('copy')
}