mirror of https://github.com/Chocobozzz/PeerTube
353 lines
11 KiB
TypeScript
353 lines
11 KiB
TypeScript
import { copyFile, ensureDir, move, remove, stat } from 'fs-extra'
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import { basename, extname as extnameUtil, join } from 'path'
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import { createTorrentAndSetInfoHash } from '@server/helpers/webtorrent'
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import { MStreamingPlaylistFilesVideo, MVideoFile, MVideoWithAllFiles, MVideoWithFile } from '@server/types/models'
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import { getTargetBitrate, VideoResolution } from '../../shared/models/videos'
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import { VideoStreamingPlaylistType } from '../../shared/models/videos/video-streaming-playlist.type'
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import { AvailableEncoders, EncoderOptionsBuilder, transcode, TranscodeOptions, TranscodeOptionsType } from '../helpers/ffmpeg-utils'
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import {
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canDoQuickTranscode,
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getAudioStream,
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getDurationFromVideoFile,
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getMaxAudioBitrate,
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getMetadataFromFile,
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getVideoFileBitrate,
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getVideoFileFPS
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} from '../helpers/ffprobe-utils'
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import { logger } from '../helpers/logger'
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import { CONFIG } from '../initializers/config'
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import {
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HLS_STREAMING_PLAYLIST_DIRECTORY,
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P2P_MEDIA_LOADER_PEER_VERSION,
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VIDEO_TRANSCODING_FPS,
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WEBSERVER
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} from '../initializers/constants'
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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'
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import { generateVideoStreamingPlaylistName, getVideoFilename, getVideoFilePath } from './video-paths'
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/**
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* Optimize the original video file and replace it. The resolution is not changed.
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*/
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async function optimizeOriginalVideofile (video: MVideoWithFile, inputVideoFileArg?: MVideoFile) {
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const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
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const newExtname = '.mp4'
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const inputVideoFile = inputVideoFileArg || video.getMaxQualityFile()
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const videoInputPath = getVideoFilePath(video, inputVideoFile)
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const videoTranscodedPath = join(transcodeDirectory, video.id + '-transcoded' + newExtname)
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const transcodeType: TranscodeOptionsType = await canDoQuickTranscode(videoInputPath)
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? 'quick-transcode'
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: 'video'
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const transcodeOptions: TranscodeOptions = {
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type: transcodeType,
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inputPath: videoInputPath,
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outputPath: videoTranscodedPath,
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availableEncoders,
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profile: 'default',
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resolution: inputVideoFile.resolution
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}
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// Could be very long!
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await transcode(transcodeOptions)
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try {
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await remove(videoInputPath)
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// Important to do this before getVideoFilename() to take in account the new file extension
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inputVideoFile.extname = newExtname
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const videoOutputPath = getVideoFilePath(video, inputVideoFile)
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await onVideoFileTranscoding(video, inputVideoFile, videoTranscodedPath, videoOutputPath)
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} catch (err) {
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// Auto destruction...
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video.destroy().catch(err => logger.error('Cannot destruct video after transcoding failure.', { err }))
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throw err
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}
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}
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/**
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* Transcode the original video file to a lower resolution.
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*/
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async function transcodeNewResolution (video: MVideoWithFile, resolution: VideoResolution, isPortrait: boolean) {
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const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
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const extname = '.mp4'
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// We are sure it's x264 in mp4 because optimizeOriginalVideofile was already executed
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const videoInputPath = getVideoFilePath(video, video.getMaxQualityFile())
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const newVideoFile = new VideoFileModel({
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resolution,
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extname,
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size: 0,
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videoId: video.id
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})
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const videoOutputPath = getVideoFilePath(video, newVideoFile)
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const videoTranscodedPath = join(transcodeDirectory, getVideoFilename(video, newVideoFile))
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const transcodeOptions = resolution === VideoResolution.H_NOVIDEO
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? {
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type: 'only-audio' as 'only-audio',
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inputPath: videoInputPath,
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outputPath: videoTranscodedPath,
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availableEncoders,
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profile: 'default',
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resolution
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}
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: {
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type: 'video' as 'video',
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inputPath: videoInputPath,
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outputPath: videoTranscodedPath,
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availableEncoders,
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profile: 'default',
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resolution,
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isPortraitMode: isPortrait
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}
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await transcode(transcodeOptions)
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return onVideoFileTranscoding(video, newVideoFile, videoTranscodedPath, videoOutputPath)
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}
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async function mergeAudioVideofile (video: MVideoWithAllFiles, resolution: VideoResolution) {
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const transcodeDirectory = CONFIG.STORAGE.TMP_DIR
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const newExtname = '.mp4'
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const inputVideoFile = video.getMinQualityFile()
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const audioInputPath = getVideoFilePath(video, inputVideoFile)
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const videoTranscodedPath = join(transcodeDirectory, video.id + '-transcoded' + newExtname)
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// If the user updates the video preview during transcoding
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const previewPath = video.getPreview().getPath()
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const tmpPreviewPath = join(CONFIG.STORAGE.TMP_DIR, basename(previewPath))
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await copyFile(previewPath, tmpPreviewPath)
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const transcodeOptions = {
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type: 'merge-audio' as 'merge-audio',
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inputPath: tmpPreviewPath,
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outputPath: videoTranscodedPath,
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availableEncoders,
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profile: 'default',
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audioPath: audioInputPath,
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resolution
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}
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try {
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await transcode(transcodeOptions)
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await remove(audioInputPath)
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await remove(tmpPreviewPath)
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} catch (err) {
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await remove(tmpPreviewPath)
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throw err
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}
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// Important to do this before getVideoFilename() to take in account the new file extension
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inputVideoFile.extname = newExtname
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const videoOutputPath = getVideoFilePath(video, inputVideoFile)
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// ffmpeg generated a new video file, so update the video duration
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// See https://trac.ffmpeg.org/ticket/5456
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video.duration = await getDurationFromVideoFile(videoTranscodedPath)
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await video.save()
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return onVideoFileTranscoding(video, inputVideoFile, videoTranscodedPath, videoOutputPath)
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}
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async function generateHlsPlaylist (options: {
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video: MVideoWithFile
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videoInputPath: string
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resolution: VideoResolution
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copyCodecs: boolean
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isPortraitMode: boolean
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}) {
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const { video, videoInputPath, resolution, copyCodecs, isPortraitMode } = options
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const baseHlsDirectory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid)
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await ensureDir(join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid))
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const outputPath = join(baseHlsDirectory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(resolution))
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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,
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outputPath,
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availableEncoders,
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profile: 'default',
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resolution,
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copyCodecs,
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isPortraitMode,
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hlsPlaylist: {
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videoFilename
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}
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}
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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,
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playlistUrl,
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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
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}, { returning: true }) as [ MStreamingPlaylistFilesVideo, boolean ]
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videoStreamingPlaylist.Video = video
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const newVideoFile = new VideoFileModel({
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resolution,
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extname: extnameUtil(videoFilename),
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size: 0,
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fps: -1,
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videoStreamingPlaylistId: videoStreamingPlaylist.id
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})
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const videoFilePath = getVideoFilePath(videoStreamingPlaylist, newVideoFile)
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const stats = await stat(videoFilePath)
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newVideoFile.size = stats.size
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newVideoFile.fps = await getVideoFileFPS(videoFilePath)
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newVideoFile.metadata = await getMetadataFromFile(videoFilePath)
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await createTorrentAndSetInfoHash(videoStreamingPlaylist, newVideoFile)
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await VideoFileModel.customUpsert(newVideoFile, 'streaming-playlist', undefined)
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videoStreamingPlaylist.VideoFiles = await videoStreamingPlaylist.$get('VideoFiles')
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videoStreamingPlaylist.p2pMediaLoaderInfohashes = VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(
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playlistUrl, videoStreamingPlaylist.VideoFiles
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)
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await videoStreamingPlaylist.save()
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video.setHLSPlaylist(videoStreamingPlaylist)
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await updateMasterHLSPlaylist(video)
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await updateSha256VODSegments(video)
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return video
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}
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// ---------------------------------------------------------------------------
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// Available encoders profiles
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// ---------------------------------------------------------------------------
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const defaultX264OptionsBuilder: EncoderOptionsBuilder = async ({ input, resolution, fps }) => {
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if (!fps) return { outputOptions: [] }
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let targetBitrate = getTargetBitrate(resolution, fps, VIDEO_TRANSCODING_FPS)
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// Don't transcode to an higher bitrate than the original file
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const fileBitrate = await getVideoFileBitrate(input)
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targetBitrate = Math.min(targetBitrate, fileBitrate)
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return {
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outputOptions: [
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// Constrained Encoding (VBV)
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// https://slhck.info/video/2017/03/01/rate-control.html
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// https://trac.ffmpeg.org/wiki/Limiting%20the%20output%20bitrate
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`-maxrate ${targetBitrate}`, `-bufsize ${targetBitrate * 2}`
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]
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}
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}
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const defaultAACOptionsBuilder: EncoderOptionsBuilder = async ({ input }) => {
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const parsedAudio = await getAudioStream(input)
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// we try to reduce the ceiling bitrate by making rough matches of bitrates
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// of course this is far from perfect, but it might save some space in the end
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const audioCodecName = parsedAudio.audioStream['codec_name']
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const bitrate = getMaxAudioBitrate(audioCodecName, parsedAudio.bitrate)
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if (bitrate !== undefined && bitrate !== -1) {
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return { outputOptions: [ '-b:a', bitrate + 'k' ] }
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}
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return { outputOptions: [] }
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}
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const defaultLibFDKAACOptionsBuilder: EncoderOptionsBuilder = () => {
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return { outputOptions: [ '-aq', '5' ] }
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}
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const availableEncoders: AvailableEncoders = {
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vod: {
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libx264: {
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default: defaultX264OptionsBuilder
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},
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aac: {
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default: defaultAACOptionsBuilder
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},
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libfdkAAC: {
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default: defaultLibFDKAACOptionsBuilder
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}
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},
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live: {
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libx264: {
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default: defaultX264OptionsBuilder
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},
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aac: {
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default: defaultAACOptionsBuilder
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},
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libfdkAAC: {
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default: defaultLibFDKAACOptionsBuilder
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}
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}
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}
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// ---------------------------------------------------------------------------
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export {
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generateHlsPlaylist,
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optimizeOriginalVideofile,
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transcodeNewResolution,
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mergeAudioVideofile
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}
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// ---------------------------------------------------------------------------
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async function onVideoFileTranscoding (video: MVideoWithFile, videoFile: MVideoFile, transcodingPath: string, outputPath: string) {
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const stats = await stat(transcodingPath)
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const fps = await getVideoFileFPS(transcodingPath)
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const metadata = await getMetadataFromFile(transcodingPath)
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await move(transcodingPath, outputPath, { overwrite: true })
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videoFile.size = stats.size
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videoFile.fps = fps
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videoFile.metadata = metadata
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await createTorrentAndSetInfoHash(video, videoFile)
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await VideoFileModel.customUpsert(videoFile, 'video', undefined)
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video.VideoFiles = await video.$get('VideoFiles')
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return video
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}
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