title: Firefox won't play mp4 natively, it seems to skip to the end
body: <p>I am having issues with Firefox 24 playing my <code>mp4</code> videos. I enter the url to the video in the address bar (e.g. <code>http://www.mywebsite.com/video.mp4</code>) the video appears to load and skips to the end and shows the "repeat" icon. If I click the icon the video attempts to load and skips to the end again.</p>
  
  <p>In Firebug I can see three requests</p>
  
  <ol>
  <li>The first request asks for the whole video and returns a <code>200 OK</code>.</li>
  <li>The second request asks for the very end of the video (<code>Range : bytes=33390592-</code>) and gets a <code>206 Partial Content</code> for the requested range (<code>Content-Range : bytes 33390592-33860228/33860229</code>)</li>
  <li>The third request asks for a substantial part of the video (<code>Range : bytes=65536-</code>) and again gets a <code>206 Partial Content</code> reponse for the requested range (<code>Content-Range : bytes 65536-33860228/33860229</code>)</li>
  </ol>
  
  <p>In Chrome I see only the first request/response and the video plays correctly.</p>
  
  <p>The <code>Content-Type</code> of the video is <code>video/mp4</code> in all three requests.</p>
  
  <p>Any ideas?</p>