title: Media Source Api not working for a custom webm file (Chrome Version 23.0.1271.97 m)
body: <p>I am referring a media source api demo given on this <a href="http://html5-demos.appspot.com/static/media-source.html" rel="nofollow">link</a></p>
  
  <p>It is working fine for the given test webm file but when i tried to change the name of the file to a custom webm file the code stopped working.</p>
  
  <p>It is generating following error : <code>Uncaught Error: INVALID_STATE_ERR: DOM Exception 11</code> at following code :  <code>sourceBuffer.append(new Uint8Array(e.target.result));</code></p>
  
  <p>To check whether the custom webm file is working i have created a test page in which i have defined a video tag having source of that custom webm file.
  When i ran the code it is working fine.</p>
  
  <p>I am unable to understand the reason for this strange behavior.</p>