62 lines
1.9 KiB
TypeScript
62 lines
1.9 KiB
TypeScript
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import { ensureDir, pathExists } from 'fs-extra'
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import { dirname } from 'path'
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import { buildAbsoluteFixturePath } from './tests'
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import * as ffmpeg from 'fluent-ffmpeg'
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async function generateHighBitrateVideo () {
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const tempFixturePath = buildAbsoluteFixturePath('video_high_bitrate_1080p.mp4', true)
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await ensureDir(dirname(tempFixturePath))
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const exists = await pathExists(tempFixturePath)
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if (!exists) {
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console.log('Generating high bitrate video.')
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// Generate a random, high bitrate video on the fly, so we don't have to include
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// a large file in the repo. The video needs to have a certain minimum length so
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// that FFmpeg properly applies bitrate limits.
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// https://stackoverflow.com/a/15795112
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return new Promise<string>((res, rej) => {
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ffmpeg()
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.outputOptions([ '-f rawvideo', '-video_size 1920x1080', '-i /dev/urandom' ])
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.outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
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.outputOptions([ '-maxrate 10M', '-bufsize 10M' ])
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.output(tempFixturePath)
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.on('error', rej)
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.on('end', () => res(tempFixturePath))
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.run()
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})
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}
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return tempFixturePath
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}
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async function generateVideoWithFramerate (fps = 60) {
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const tempFixturePath = buildAbsoluteFixturePath(`video_${fps}fps.mp4`, true)
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await ensureDir(dirname(tempFixturePath))
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const exists = await pathExists(tempFixturePath)
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if (!exists) {
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console.log('Generating video with framerate %d.', fps)
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return new Promise<string>((res, rej) => {
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ffmpeg()
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.outputOptions([ '-f rawvideo', '-video_size 1280x720', '-i /dev/urandom' ])
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.outputOptions([ '-ac 2', '-f s16le', '-i /dev/urandom', '-t 10' ])
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.outputOptions([ `-r ${fps}` ])
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.output(tempFixturePath)
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.on('error', rej)
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.on('end', () => res(tempFixturePath))
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.run()
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})
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}
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return tempFixturePath
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}
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export {
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generateHighBitrateVideo,
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generateVideoWithFramerate
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}
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