konowebcodecs/examples/browser/transcode.html
2019-10-24 07:47:11 +08:00

37 lines
1.1 KiB
HTML

<html>
<head>
<script src="/dist/ffmpeg.dev.js"></script>
</head>
<body>
<input type="file" id="uploader">
<video controls>
<source id="video-src" type="video/mp4">
</video>
<script>
const { createWorker } = FFmpeg;
const worker = createWorker({
corePath: '../../node_modules/@ffmpeg/core/ffmpeg-core.js',
});
const bufferToBase64 = (buf) => {
const binstr = Array.prototype.map.call(buf, function (ch) {
return String.fromCharCode(ch);
}).join('');
return btoa(binstr);
}
const transcode = async ({ target: { files } }) => {
await worker.load();
console.log('Start transcoding');
const { data } = await worker.transcode('/tests/assets/test.avi', 'mp4');
console.log(data);
console.log('Complete transcoding');
const b64 = bufferToBase64(data);
document.getElementById('video-src').setAttribute('src', `data:video/mp4;base64,${b64}`);
}
const elm = document.getElementById('uploader');
elm.addEventListener('change', transcode);
</script>
</body>
</html>