<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Fmpq教程(fmpq.com)</title>
</head>
<body>
<video width="320" height="240" controls>
<source src="movie.mp4" type="video/mp4" media="screen and (min-width:320px)">
<source src="movie.ogg" type="video/ogg" media="screen and (min-width:320px)">
您的浏览器不支持 video 标签。
</video>
<p><b>注意:</b> 目前所有主流浏览器都不支持 media 属性。</p>
</body>
</html>