Simple test for video support in email using HTML5
<!DOCTYPE html><html>
<head>
<meta charset="UTF-8" />
<title>Video For Everybody Test Page</title>
<style type="text/css">
body {width: 640px; margin: 0 auto 20px;
font: 11px "Helvetica Neue", Arial, sans-serif; color: #3b3d3c;}
</style>
</head>
<body>
<p>Simple test for video support in email using HTML5</p>
<video width="640" height="360" poster="http://www.campaignmonitor.com/uploads/testing/html5video/poster.jpg" controls="controls">
<source src="http://www.campaignmonitor.com/uploads/testing/html5video/big_buck_bunny.mp4" type="video/mp4" />
<p><a href="http://www.campaignmonitor.com/"><img src="http://www.campaignmonitor.com/uploads/testing/html5video/poster.jpg" width="640" height="360" border="0" alt="Poster"></a></p>
</video>
</body>
</html>