PeerTube/server/lib/video-transcoding.ts

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import { CONFIG } from '../initializers'
import { join, extname } from 'path'
import { getVideoFileFPS, getVideoFileResolution, transcode } from '../helpers/ffmpeg-utils'
import { copy, remove, rename, stat } from 'fs-extra'
import { logger } from '../helpers/logger'
import { VideoResolution } from '../../shared/models/videos'
import { VideoFileModel } from '../models/video/video-file'
import { VideoModel } from '../models/video/video'
async function optimizeOriginalVideofile (video: VideoModel) {
const videosDirectory = CONFIG.STORAGE.VIDEOS_DIR
const newExtname = '.mp4'
const inputVideoFile = video.getOriginalFile()
const videoInputPath = join(videosDirectory, video.getVideoFilename(inputVideoFile))
const videoTranscodedPath = join(videosDirectory, video.id + '-transcoded' + newExtname)
const transcodeOptions = {
inputPath: videoInputPath,
outputPath: videoTranscodedPath
}
// 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
inputVideoFile.set('extname', newExtname)
const videoOutputPath = video.getVideoFilePath(inputVideoFile)
await rename(videoTranscodedPath, videoOutputPath)
const stats = await stat(videoOutputPath)
const fps = await getVideoFileFPS(videoOutputPath)
inputVideoFile.set('size', stats.size)
inputVideoFile.set('fps', fps)
await video.createTorrentAndSetInfoHash(inputVideoFile)
await inputVideoFile.save()
} catch (err) {
// Auto destruction...
video.destroy().catch(err => logger.error('Cannot destruct video after transcoding failure.', { err }))
throw err
}
}
async function transcodeOriginalVideofile (video: VideoModel, resolution: VideoResolution, isPortraitMode: boolean) {
const videosDirectory = CONFIG.STORAGE.VIDEOS_DIR
const extname = '.mp4'
// We are sure it's x264 in mp4 because optimizeOriginalVideofile was already executed
const videoInputPath = join(videosDirectory, video.getVideoFilename(video.getOriginalFile()))
const newVideoFile = new VideoFileModel({
resolution,
extname,
size: 0,
videoId: video.id
})
const videoOutputPath = join(videosDirectory, video.getVideoFilename(newVideoFile))
const transcodeOptions = {
inputPath: videoInputPath,
outputPath: videoOutputPath,
resolution,
isPortraitMode
}
await transcode(transcodeOptions)
const stats = await stat(videoOutputPath)
const fps = await getVideoFileFPS(videoOutputPath)
newVideoFile.set('size', stats.size)
newVideoFile.set('fps', fps)
await video.createTorrentAndSetInfoHash(newVideoFile)
await newVideoFile.save()
video.VideoFiles.push(newVideoFile)
}
async function importVideoFile (video: VideoModel, inputFilePath: string) {
const { videoFileResolution } = await getVideoFileResolution(inputFilePath)
const { size } = await stat(inputFilePath)
const fps = await getVideoFileFPS(inputFilePath)
let updatedVideoFile = new VideoFileModel({
resolution: videoFileResolution,
extname: extname(inputFilePath),
size,
fps,
videoId: video.id
})
const currentVideoFile = video.VideoFiles.find(videoFile => videoFile.resolution === updatedVideoFile.resolution)
if (currentVideoFile) {
// Remove old file and old torrent
await video.removeFile(currentVideoFile)
await video.removeTorrent(currentVideoFile)
// Remove the old video file from the array
video.VideoFiles = video.VideoFiles.filter(f => f !== currentVideoFile)
// Update the database
currentVideoFile.set('extname', updatedVideoFile.extname)
currentVideoFile.set('size', updatedVideoFile.size)
currentVideoFile.set('fps', updatedVideoFile.fps)
updatedVideoFile = currentVideoFile
}
const outputPath = video.getVideoFilePath(updatedVideoFile)
await copy(inputFilePath, outputPath)
await video.createTorrentAndSetInfoHash(updatedVideoFile)
await updatedVideoFile.save()
video.VideoFiles.push(updatedVideoFile)
}
export {
optimizeOriginalVideofile,
transcodeOriginalVideofile,
importVideoFile
}