此示例是否适用于所有这些浏览器?
http://jsbin.com/okofet/1/edit
(它对我有用)

Does this example work in all those browsers for you?
http://jsbin.com/okofet/1/edit
(it does for me)

尝试将所有 标签替换为:

Try replacing all your <script> tags with:

<link href="http://vjs.zencdn.net/4.0/video-js.css" rel="stylesheet">
<script src="http://vjs.zencdn.net/4.0/video.js"></script>

(您可能还需要一个与.mp4"不同的 ID.我不确定这是否有效)

(You might also want a different id than '.mp4'. I'm not sure if that's valid)