在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
<style>video {
    width: 100%;
    height: auto;
}
</style>
</head>
<body>

<video width="400" controls>
  <source src="mov_bbb.mp4.html" type="video/mp4">
  <source src="mov_bbb.ogg.html" type="video/ogg">
  Your browser does not support HTML5 video.
</video>


<p>调整浏览器窗口大小查看视频播放器变化</p>

</body>
</html>
源代码

动行结果
