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<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
<script type="text/javascript">
function doTest() {
var video = document.getElementById("v1");
video.src = "vp9hdr2020.webm";
video.preload = "metadata";
video.addEventListener("loadeddata", function() {
document.documentElement.removeAttribute('class');
});
}
window.addEventListener("MozReftestInvalidate", doTest);
</script>
</head>
<body>
<video id="v1" style="position:absolute; left:0; top:0"></video>
</body>
</html>