title: MediaSource API and mp4
body: <p>I followed <a href="http://updates.html5rocks.com/2011/11/Stream-video-using-the-MediaSource-API">this</a> example from Html5Rocks.com, that is using the MediaSource API and a .webm video. I tried the example with another .webm video and it was working, but when I tried with .mp4 video it didn't work. Is it possible somehow?</p>