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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<title> Bug 1368490 : Crash if media recorder source stream reduces number of channels. </title>
</head>
<meta charset="utf-8">
<script type="text/javascript">
function boom() {
let audioContext = new window.AudioContext();
let oscillator = audioContext.createOscillator();
let dst = audioContext.createMediaStreamDestination();
oscillator.channelCount = 4;
dst.channelCount = 4;
oscillator.connect(dst, 0, 0);
oscillator.start();
mediaRec = new MediaRecorder(dst.stream);
mediaRec.start(100);
setTimeout(() => {
dst.channelCount = 1;
setTimeout(() => {
mediaRec.stop();
document.documentElement.removeAttribute("class");
}, 100);
}, 100);
}
</script>
<body onload="boom();"></body>
</html>
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