// Put in the order we want to proceed jobs
const resolutions = [
+ VideoResolution.H_NOVIDEO,
VideoResolution.H_480P,
VideoResolution.H_360P,
VideoResolution.H_720P,
VideoResolution.H_240P,
- VideoResolution.H_1080P
+ VideoResolution.H_1080P,
+ VideoResolution.H_4K
]
for (const resolution of resolutions) {
async function getVideoFileSize (path: string) {
const videoStream = await getVideoStreamFromFile(path)
- return {
- width: videoStream.width,
- height: videoStream.height
- }
+ return videoStream == null
+ ? {
+ width: 0,
+ height: 0
+ }
+ : {
+ width: videoStream.width,
+ height: videoStream.height
+ }
}
async function getVideoFileResolution (path: string) {
async function getVideoFileFPS (path: string) {
const videoStream = await getVideoStreamFromFile(path)
+ if (videoStream == null) {
+ return 0
+ }
+
for (const key of [ 'avg_frame_rate', 'r_frame_rate' ]) {
const valuesText: string = videoStream[key]
if (!valuesText) continue
}
}
-type TranscodeOptionsType = 'hls' | 'quick-transcode' | 'video' | 'merge-audio'
+type TranscodeOptionsType = 'hls' | 'quick-transcode' | 'video' | 'merge-audio' | 'split-audio'
interface BaseTranscodeOptions {
type: TranscodeOptionsType
interface HLSTranscodeOptions extends BaseTranscodeOptions {
type: 'hls'
+ copyCodecs: boolean
hlsPlaylist: {
videoFilename: string
}
audioPath: string
}
-type TranscodeOptions = HLSTranscodeOptions | VideoTranscodeOptions | MergeAudioTranscodeOptions | QuickTranscodeOptions
+interface SplitAudioTranscodeOptions extends BaseTranscodeOptions {
+ type: 'split-audio'
+}
+
+type TranscodeOptions = HLSTranscodeOptions | VideoTranscodeOptions | MergeAudioTranscodeOptions | SplitAudioTranscodeOptions | QuickTranscodeOptions
function transcode (options: TranscodeOptions) {
return new Promise<void>(async (res, rej) => {
command = await buildHLSCommand(command, options)
} else if (options.type === 'merge-audio') {
command = await buildAudioMergeCommand(command, options)
+ } else if (options.type === 'split-audio') {
+ command = await buildAudioSplitCommand(command, options)
} else {
command = await buildx264Command(command, options)
}
const resolution = await getVideoFileResolution(path)
// check video params
+ if (videoStream == null) return false
if (videoStream[ 'codec_name' ] !== 'h264') return false
+ if (videoStream[ 'pix_fmt' ] !== 'yuv420p') return false
if (fps < VIDEO_TRANSCODING_FPS.MIN || fps > VIDEO_TRANSCODING_FPS.MAX) return false
if (bitRate > getMaxBitrate(resolution.videoFileResolution, fps, VIDEO_TRANSCODING_FPS)) return false
// ---------------------------------------------------------------------------
-async function buildx264Command (command: ffmpeg.FfmpegCommand, options: VideoTranscodeOptions) {
+async function buildx264Command (command: ffmpeg.FfmpegCommand, options: TranscodeOptions) {
let fps = await getVideoFileFPS(options.inputPath)
// On small/medium resolutions, limit FPS
if (
return command
}
+async function buildAudioSplitCommand (command: ffmpeg.FfmpegCommand, options: SplitAudioTranscodeOptions) {
+ command = await presetAudioSplit(command)
+
+ return command
+}
+
async function buildQuickTranscodeCommand (command: ffmpeg.FfmpegCommand) {
command = await presetCopy(command)
async function buildHLSCommand (command: ffmpeg.FfmpegCommand, options: HLSTranscodeOptions) {
const videoPath = getHLSVideoPath(options)
- command = await presetCopy(command)
+ if (options.copyCodecs) command = await presetCopy(command)
+ else command = await buildx264Command(command, options)
command = command.outputOption('-hls_time 4')
.outputOption('-hls_list_size 0')
if (err) return rej(err)
const videoStream = metadata.streams.find(s => s.codec_type === 'video')
- if (!videoStream) return rej(new Error('Cannot find video stream of ' + path))
+ //if (!videoStream) return rej(new Error('Cannot find video stream of ' + path))
return res(videoStream)
})
export namespace bitrate {
const baseKbitrate = 384
- const toBits = (kbits: number): number => { return kbits * 8000 }
+ const toBits = (kbits: number) => kbits * 8000
export const aac = (bitrate: number): number => {
switch (true) {
- case bitrate > toBits(baseKbitrate):
- return baseKbitrate
- default:
- return -1 // we interpret it as a signal to copy the audio stream as is
+ case bitrate > toBits(baseKbitrate):
+ return baseKbitrate
+
+ default:
+ return -1 // we interpret it as a signal to copy the audio stream as is
}
}
made here are not made to be accurate, especially with good mp3 encoders.
*/
switch (true) {
- case bitrate <= toBits(192):
- return 128
- case bitrate <= toBits(384):
- return 256
- default:
- return baseKbitrate
+ case bitrate <= toBits(192):
+ return 128
+
+ case bitrate <= toBits(384):
+ return 256
+
+ default:
+ return baseKbitrate
}
}
}
.videoCodec('copy')
.audioCodec('copy')
}
+
+
+async function presetAudioSplit (command: ffmpeg.FfmpegCommand): Promise<ffmpeg.FfmpegCommand> {
+ return command
+ .format('mp4')
+ .audioCodec('copy')
+ .noVideo()
+}