80 lines
2.0 KiB
TypeScript
80 lines
2.0 KiB
TypeScript
import * as ffmpeg from 'fluent-ffmpeg'
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import { CONFIG } from '../initializers'
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import { VideoResolution } from '../../shared/models/videos/video-resolution.enum'
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function getVideoFileHeight (path: string) {
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return new Promise<number>((res, rej) => {
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ffmpeg.ffprobe(path, (err, metadata) => {
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if (err) return rej(err)
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const videoStream = metadata.streams.find(s => s.codec_type === 'video')
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return res(videoStream.height)
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})
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})
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}
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function getDurationFromVideoFile (path: string) {
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return new Promise<number>((res, rej) => {
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ffmpeg.ffprobe(path, (err, metadata) => {
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if (err) return rej(err)
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return res(Math.floor(metadata.format.duration))
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})
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})
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}
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function generateImageFromVideoFile (fromPath: string, folder: string, imageName: string, size: string) {
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const options = {
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filename: imageName,
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count: 1,
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folder
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}
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if (size !== undefined) {
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options['size'] = size
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}
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return new Promise<string>((res, rej) => {
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ffmpeg(fromPath)
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.on('error', rej)
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.on('end', () => res(imageName))
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.thumbnail(options)
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})
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}
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type TranscodeOptions = {
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inputPath: string
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outputPath: string
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resolution?: VideoResolution
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}
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function transcode (options: TranscodeOptions) {
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return new Promise<void>((res, rej) => {
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let command = ffmpeg(options.inputPath)
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.output(options.outputPath)
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.videoCodec('libx264')
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.outputOption('-threads ' + CONFIG.TRANSCODING.THREADS)
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.outputOption('-movflags faststart')
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// .outputOption('-crf 18')
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if (options.resolution !== undefined) {
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const size = `?x${options.resolution}` // '?x720' for example
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command = command.size(size)
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}
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command.on('error', rej)
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.on('end', res)
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.run()
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})
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}
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// ---------------------------------------------------------------------------
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export {
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getVideoFileHeight,
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getDurationFromVideoFile,
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generateImageFromVideoFile,
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transcode
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}
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