transavormer
Version:
Transform (transcode, transmux, etc) audio/video formats using libav.js and WebCodecs
83 lines (76 loc) • 3.28 kB
HTML
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<html>
<head>
<meta charset="utf8" />
<title>Transcoding demo</title>
</head>
<body>
<script type="text/javascript" src="../node_modules/@libav.js/variant-webcodecs-avf/dist/libav-webcodecs-avf.js"></script>
<script type="text/javascript" src="../dist/transavormer.js"></script>
<input type="file" id="file" />
<script type="text/javascript">(function() {
const tav = TransAVormer;
const fileBox = document.getElementById("file");
fileBox.onchange = async function() {
const file = fileBox.files[0];
if (!file)
return;
const la = await LibAV.LibAV();
const out = await tav.build(la, {
type: "muxer",
format: "matroska",
input: {
type: "encoder",
videoConfig: {
codec: "vp8"
},
audioConfig: {
codec: "opus"
},
input: file
}
});
const outParts = [];
const rdr = out.stream.getReader();
while (true) {
const rd = await rdr.read();
if (rd.done) break;
outParts.push(rd.value.data);
}
la.terminate();
const outBlob = new File(outParts, "out.mkv", {type: "video/x-matroska"});
const outURL = URL.createObjectURL(outBlob);
const a = document.createElement("a");
a.style.display = "block";
a.href = outURL;
a.innerText = "Output";
document.body.appendChild(a);
}
})();
</script>
</body>
</html>