Can a HTML 5 video tag have multiple MP4 sources with different codecs?

Question

I\'m thinking about the fact that the higher the MP4 profile we go, the better the video quality gets...

This brings me to a question I thought I\'d ask the experts!

Answer 1

You can provide several source tags and the user agent should play the first one it can handle.

See W3C definition: http://www.w3.org/TR/html5/embedded-content-0.html#the-source-element

There also a javascript example for fallbacks is presented.

http://www.w3.org/TR/html5/embedded-content-0.html#mime-types shows some javascript how you can test if a browser can play a specific codec.