1348381.html - mozsearch

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<!DOCTYPE html>

<html class="reftest-wait">

<head>

  <title>Bug 1348381: Crash when recording extremely large canvas' captureStream</title>

</head>

</body>

<canvas id="c" height="0.6"></canvas>

<img id="img" src="data:image/gif;base64,R0lGODlhAQABAAAAACwAAAAAAQABAAA="></img>

<script type="application/javascript">

const c = document.getElementById("c");

const ctx = c.getContext('2d');

const s = c.captureStream(0);

const mr = new MediaRecorder(s);

const t = s.getVideoTracks()[0];

mr.start();

const img = document.getElementById('img');

t.enabled = false;

ctx.drawImage(img, 16, 18014398509481984);

setTimeout(() => document.documentElement.removeAttribute("class"), 100);

</script>

</body>

</html>