PeerTube/server/lib/video-transcoding.ts

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import { copyFile, ensureDir, move, remove, stat } from 'fs-extra'
import { basename, extname as extnameUtil, join } from 'path'
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import { createTorrentAndSetInfoHash } from '@server/helpers/webtorrent'
import { MStreamingPlaylistFilesVideo, MVideoFile, MVideoWithAllFiles, MVideoWithFile } from '@server/types/models'
import { VideoResolution } from '../../shared/models/videos'
import { VideoStreamingPlaylistType } from '../../shared/models/videos/video-streaming-playlist.type'
import {
canDoQuickTranscode,
getDurationFromVideoFile,
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getMetadataFromFile,
getVideoFileFPS,
transcode,
TranscodeOptions,
TranscodeOptionsType
} from '../helpers/ffmpeg-utils'
import { logger } from '../helpers/logger'
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import { CONFIG } from '../initializers/config'
import { HLS_STREAMING_PLAYLIST_DIRECTORY, P2P_MEDIA_LOADER_PEER_VERSION, WEBSERVER } from '../initializers/constants'
import { VideoFileModel } from '../models/video/video-file'
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import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
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import { updateMasterHLSPlaylist, updateSha256VODSegments } from './hls'
import { generateVideoStreamingPlaylistName, getVideoFilename, getVideoFilePath } from './video-paths'
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/**
* Optimize the original video file and replace it. The resolution is not changed.
*/
async function optimizeOriginalVideofile (video: MVideoWithFile, inputVideoFileArg?: MVideoFile) {
const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
const newExtname = '.mp4'
const inputVideoFile = inputVideoFileArg || video.getMaxQualityFile()
const videoInputPath = getVideoFilePath(video, inputVideoFile)
const videoTranscodedPath = join(transcodeDirectory, video.id + '-transcoded' + newExtname)
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const transcodeType: TranscodeOptionsType = await canDoQuickTranscode(videoInputPath)
? 'quick-transcode'
: 'video'
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const transcodeOptions: TranscodeOptions = {
type: transcodeType,
inputPath: videoInputPath,
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outputPath: videoTranscodedPath,
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resolution: inputVideoFile.resolution
}
// Could be very long!
await transcode(transcodeOptions)
try {
await remove(videoInputPath)
// Important to do this before getVideoFilename() to take in account the new file extension
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inputVideoFile.extname = newExtname
const videoOutputPath = getVideoFilePath(video, inputVideoFile)
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await onVideoFileTranscoding(video, inputVideoFile, videoTranscodedPath, videoOutputPath)
} catch (err) {
// Auto destruction...
video.destroy().catch(err => logger.error('Cannot destruct video after transcoding failure.', { err }))
throw err
}
}
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/**
* Transcode the original video file to a lower resolution.
*/
async function transcodeNewResolution (video: MVideoWithFile, resolution: VideoResolution, isPortrait: boolean) {
const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
const extname = '.mp4'
// We are sure it's x264 in mp4 because optimizeOriginalVideofile was already executed
const videoInputPath = getVideoFilePath(video, video.getMaxQualityFile())
const newVideoFile = new VideoFileModel({
resolution,
extname,
size: 0,
videoId: video.id
})
const videoOutputPath = getVideoFilePath(video, newVideoFile)
const videoTranscodedPath = join(transcodeDirectory, getVideoFilename(video, newVideoFile))
const transcodeOptions = resolution === VideoResolution.H_NOVIDEO
? {
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type: 'only-audio' as 'only-audio',
inputPath: videoInputPath,
outputPath: videoTranscodedPath,
resolution
}
: {
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type: 'video' as 'video',
inputPath: videoInputPath,
outputPath: videoTranscodedPath,
resolution,
isPortraitMode: isPortrait
}
await transcode(transcodeOptions)
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return onVideoFileTranscoding(video, newVideoFile, videoTranscodedPath, videoOutputPath)
}
async function mergeAudioVideofile (video: MVideoWithAllFiles, resolution: VideoResolution) {
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const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
const newExtname = '.mp4'
const inputVideoFile = video.getMinQualityFile()
const audioInputPath = getVideoFilePath(video, inputVideoFile)
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const videoTranscodedPath = join(transcodeDirectory, video.id + '-transcoded' + newExtname)
// If the user updates the video preview during transcoding
const previewPath = video.getPreview().getPath()
const tmpPreviewPath = join(CONFIG.STORAGE.TMP_DIR, basename(previewPath))
await copyFile(previewPath, tmpPreviewPath)
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const transcodeOptions = {
type: 'merge-audio' as 'merge-audio',
inputPath: tmpPreviewPath,
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outputPath: videoTranscodedPath,
audioPath: audioInputPath,
resolution
}
try {
await transcode(transcodeOptions)
await remove(audioInputPath)
await remove(tmpPreviewPath)
} catch (err) {
await remove(tmpPreviewPath)
throw err
}
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// Important to do this before getVideoFilename() to take in account the new file extension
inputVideoFile.extname = newExtname
const videoOutputPath = getVideoFilePath(video, inputVideoFile)
// ffmpeg generated a new video file, so update the video duration
// See https://trac.ffmpeg.org/ticket/5456
video.duration = await getDurationFromVideoFile(videoTranscodedPath)
await video.save()
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return onVideoFileTranscoding(video, inputVideoFile, videoTranscodedPath, videoOutputPath)
}
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async function generateHlsPlaylist (options: {
video: MVideoWithFile
videoInputPath: string
resolution: VideoResolution
copyCodecs: boolean
isPortraitMode: boolean
}) {
const { video, videoInputPath, resolution, copyCodecs, isPortraitMode } = options
const baseHlsDirectory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid)
await ensureDir(join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid))
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const outputPath = join(baseHlsDirectory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(resolution))
const videoFilename = generateVideoStreamingPlaylistName(video.uuid, resolution)
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const transcodeOptions = {
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type: 'hls' as 'hls',
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inputPath: videoInputPath,
outputPath,
resolution,
copyCodecs,
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isPortraitMode,
hlsPlaylist: {
videoFilename
}
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}
await transcode(transcodeOptions)
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const playlistUrl = WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsMasterPlaylistStaticPath(video.uuid)
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const [ videoStreamingPlaylist ] = await VideoStreamingPlaylistModel.upsert({
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videoId: video.id,
playlistUrl,
segmentsSha256Url: WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsSha256SegmentsStaticPath(video.uuid, video.isLive),
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p2pMediaLoaderInfohashes: [],
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p2pMediaLoaderPeerVersion: P2P_MEDIA_LOADER_PEER_VERSION,
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type: VideoStreamingPlaylistType.HLS
}, { returning: true }) as [ MStreamingPlaylistFilesVideo, boolean ]
videoStreamingPlaylist.Video = video
const newVideoFile = new VideoFileModel({
resolution,
extname: extnameUtil(videoFilename),
size: 0,
fps: -1,
videoStreamingPlaylistId: videoStreamingPlaylist.id
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})
const videoFilePath = getVideoFilePath(videoStreamingPlaylist, newVideoFile)
const stats = await stat(videoFilePath)
newVideoFile.size = stats.size
newVideoFile.fps = await getVideoFileFPS(videoFilePath)
newVideoFile.metadata = await getMetadataFromFile(videoFilePath)
await createTorrentAndSetInfoHash(videoStreamingPlaylist, newVideoFile)
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await VideoFileModel.customUpsert(newVideoFile, 'streaming-playlist', undefined)
videoStreamingPlaylist.VideoFiles = await videoStreamingPlaylist.$get('VideoFiles')
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videoStreamingPlaylist.p2pMediaLoaderInfohashes = VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(
playlistUrl, videoStreamingPlaylist.VideoFiles
)
await videoStreamingPlaylist.save()
video.setHLSPlaylist(videoStreamingPlaylist)
await updateMasterHLSPlaylist(video)
await updateSha256VODSegments(video)
return video
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}
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// ---------------------------------------------------------------------------
export {
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generateHlsPlaylist,
optimizeOriginalVideofile,
transcodeNewResolution,
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mergeAudioVideofile
}
// ---------------------------------------------------------------------------
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async function onVideoFileTranscoding (video: MVideoWithFile, videoFile: MVideoFile, transcodingPath: string, outputPath: string) {
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const stats = await stat(transcodingPath)
const fps = await getVideoFileFPS(transcodingPath)
const metadata = await getMetadataFromFile(transcodingPath)
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await move(transcodingPath, outputPath, { overwrite: true })
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videoFile.size = stats.size
videoFile.fps = fps
videoFile.metadata = metadata
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await createTorrentAndSetInfoHash(video, videoFile)
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await VideoFileModel.customUpsert(videoFile, 'video', undefined)
video.VideoFiles = await video.$get('VideoFiles')
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return video
}