我刚为VIDEO添加了width=100%，脚本写了height=150px：
div id="example_video_1" class="video-js vjs-default-skin vjs-big-play-centered vjs-controls-enabled vjs-has-started vjs-paused vjs-user-inactive" style="width: 100%; height: 150px; ....
为什么这150px？
<html>
<head>
<title>Video.js | HTML5 Video Player</title>
<link href="video-js.css" rel="stylesheet" type="text/css">
<script src="video.js"></script>
</head>
<body>
<video id="example_video_1" class="video-js vjs-default-skin vjs-big-play-centered" controls preload="none" width="100%"
poster="http://video-js.zencoder.com/oceans-clip.png"
data-setup="{}">
<source src="http://video-js.zencoder.com/oceans-clip.mp4" type='video/mp4' />
<source src="http://video-js.zencoder.com/oceans-clip.webm" type='video/webm' />
<source src="http://video-js.zencoder.com/oceans-clip.ogv" type='video/ogg' />
</video>
</body>
</html>