<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
</head>
<body>
<script>
const WEBM_RATE_OVERFLOW = "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";

function b64ToArrayBuffer(b64) {
    const binary = atob(b64);
    const bytes = new Uint8Array(binary.length);
    for (let i = 0; i < binary.length; i++) {
        bytes[i] = binary.charCodeAt(i);
    }
    return bytes.buffer;
}

const webmBuf = b64ToArrayBuffer(WEBM_RATE_OVERFLOW);

const ms = new MediaSource();
const el = document.createElement('audio');
el.src = URL.createObjectURL(ms);

ms.addEventListener('sourceopen', () => {
    try {
        const sb = ms.addSourceBuffer('audio/webm; codecs=opus');
        sb.appendBuffer(webmBuf);
    } catch(e) {}
    setTimeout(() => { document.documentElement.className = ''; }, 1000);
});

document.body.appendChild(el);
</script>
</body>
</html>