title: HTML5 Video Error - Internet Explorer 9
body: <p>I am trying to get a .m4v video to play in IE9 using html5 video tags. When I play the video from a remote location it works fine:</p>
  
  <pre><code>&lt;video src="http://www.jplayer.org/video/m4v/Big_Buck_Bunny_Trailer_480x270_h264aac.m4v" controls="controls"&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>But when I want to play it from my server...</p>
  
  <pre><code>&lt;video src="Big_Buck_Bunny_Trailer_480x270_h264aac.m4v" controls="controls"&gt;
  &lt;/video&gt; 
  </code></pre>
  
  <p>...it only works in Chrome and not in IE9.</p>
  
  <p>What could cause the video not to play when located on my server?</p>
  
  <p>Many thanks, </p>
  
  <p>Chris</p>