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7 The HTML5 video and audio tags are used to join the video and audio tags in the page, with the support html5 browsers do not need to be pre-loaded Adobe Flash browser plug-in will be able to quickly and easily play video and audio files. And html5media.js can make video and audio tags take effect on the browser does not support html5.

Use html5media.js can be viewed on all browsers html5 video and audio files, which make up the lower versions of IE browser does not support the [video] and [audio] tag, you only need to load html5media.js use the [video] and [audio] tag will be able to cross-browser play video and audio.
How to use?
The video and audio html5 want labels can work on all browsers, you must add the following line of code in the head inside page:

<script src="//api.html5media.info/1.1.8/html5media.min.js"></script> 

Then you can use the following code to a video:

<video src="video.mp4" width="320" height="200" controls preload></video>

You can also use the following code to add an audio:

<audio src="audio.mp3" controls preload></audio>

About the HTML5 video tag usage you can refer to: HTML5 video tag video.
About the HTML5 audio tag usage you can refer to: Use the HTML5 Audio tag to create Audio Player in web.