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-rw-r--r--server/helpers/ffmpeg-utils.ts79
1 files changed, 79 insertions, 0 deletions
diff --git a/server/helpers/ffmpeg-utils.ts b/server/helpers/ffmpeg-utils.ts
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+++ b/server/helpers/ffmpeg-utils.ts
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1import * as Promise from 'bluebird'
2import * as ffmpeg from 'fluent-ffmpeg'
3
4import { CONFIG } from '../initializers'
5import { VideoResolution } from '../../shared/models/videos/video-resolution.enum'
6
7function getVideoFileHeight (path: string) {
8 return new Promise<number>((res, rej) => {
9 ffmpeg.ffprobe(path, (err, metadata) => {
10 if (err) return rej(err)
11
12 const videoStream = metadata.streams.find(s => s.codec_type === 'video')
13 return res(videoStream.height)
14 })
15 })
16}
17
18function getDurationFromVideoFile (path: string) {
19 return new Promise<number>((res, rej) => {
20 ffmpeg.ffprobe(path, (err, metadata) => {
21 if (err) return rej(err)
22
23 return res(Math.floor(metadata.format.duration))
24 })
25 })
26}
27
28function generateImageFromVideoFile (fromPath: string, folder: string, imageName: string, size?: string) {
29 const options = {
30 filename: imageName,
31 count: 1,
32 folder
33 }
34
35 if (size !== undefined) {
36 options['size'] = size
37 }
38
39 return new Promise<string>((res, rej) => {
40 ffmpeg(fromPath)
41 .on('error', rej)
42 .on('end', () => res(imageName))
43 .thumbnail(options)
44 })
45}
46
47type TranscodeOptions = {
48 inputPath: string
49 outputPath: string
50 resolution?: VideoResolution
51}
52
53function transcode (options: TranscodeOptions) {
54 return new Promise<void>((res, rej) => {
55 let command = ffmpeg(options.inputPath)
56 .output(options.outputPath)
57 .videoCodec('libx264')
58 .outputOption('-threads ' + CONFIG.TRANSCODING.THREADS)
59 .outputOption('-movflags faststart')
60
61 if (options.resolution !== undefined) {
62 const size = `${options.resolution}x?` // '720x?' for example
63 command = command.size(size)
64 }
65
66 command.on('error', rej)
67 .on('end', res)
68 .run()
69 })
70}
71
72// ---------------------------------------------------------------------------
73
74export {
75 getVideoFileHeight,
76 getDurationFromVideoFile,
77 generateImageFromVideoFile,
78 transcode
79}