chromium/third_party/blink/web_tests/media/video-zoom.html

<html>
<head>
    <meta name="fuzzy" content="0-1;0-100">
    <style> video { zoom: 150%; border: 3px solid red; } </style>
    <script src=media-file.js></script>
    <script>
        function init()
        {
            var videosPresented = allVideosPresentedPromise();
            setSrcByTagName("video", "content/test.ogv");

            if (!window.testRunner)
                return;
            testRunner.waitUntilDone();

            videosPresented.then(() => testRunner.notifyDone());
        }
    </script>

</head>
<body onload="init();">
    <p>150% zoom, with width and height attributes </p>
    &nbsp;<video width=320 height=240></video><br>
    <p>150% zoom, without width and height attributes </p>
    &nbsp;<video></video><br>
</body>
</html>