将mp4文件用格式工厂转为webm格式,界面代码如下;goole,火狐,360,ie有效。已解决,谢谢
<video width="852" height="664" controls autobuffer autoplay="true" preload="metadata" aria-describedby="demo1-description">
<source src="images/index.webm" />
<source src="images/index.mp4">
</video>