title: Specified "type" attribute of "video/mp4" is not supported
body: <p>I am using mediaelement js.. 
  on my .htacces I have these..</p>
  
  <pre><code>AddType video/mp4  mp4 m4v
  AddType audio/mp4  m4a
  AddType video/ogg  ogv
  AddType audio/ogg  ogg oga
  AddType video/webm webm
  </code></pre>
  
  <p>and on my index.html I have this on my <code>&lt;head&gt;</code></p>
  
  <pre><code>&lt;script src="/js/jquery.js"&gt;&lt;/script&gt;
  &lt;script src="/js/mediaelement-and-player.min.js"&gt;&lt;/script&gt;
  &lt;link rel="stylesheet" href="/js/mediaelementplayer.css" /&gt;
  </code></pre>
  
  <p>and the code is</p>
  
  <pre><code>&lt;video width="600" height="450" preload="none" autoplay preload="auto" &gt;
      &lt;!-- MP4 for Safari, IE9, iPhone, iPad, Android, and Windows Phone 7 --&gt;
      &lt;source type="video/mp4" src="videos/Sequence1.mp4"/&gt;
      &lt;!-- WebM/VP8 for Firefox4, Opera, and Chrome --&gt;
      &lt;source type="video/webm" src="videos/Sequence1.webm" /&gt;
      &lt;!-- Ogg/Vorbis for older Firefox and Opera versions --&gt;
     &lt;source type="video/ogg" src="videos/Sequence1.ogv" /&gt;
      &lt;!-- Flash fallback for non-HTML5 browsers without JavaScript --&gt;
      &lt;object width="320" height="240" type="application/x-shockwave-flash" data="flashmediaelement.swf"&gt;
          &lt;param name="movie" value="flashmediaelement.swf" /&gt;
          &lt;param name="flashvars" value="controls=&amp;file=videos/Sequence1.mp4" /&gt;     
      &lt;/object&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>unfortunately.. its not playing on mozilla browser.. it keeps on loading but not playing..
  and using the ctrl+shift+k on mozilla.. I found these error.</p>
  
  <p>--
  [18:47:12.942] Specified "type" attribute of "video/mp4" is not supported. Load of media resource videos/Sequence1.mp4 failed. @ <a href="http://thesuperheroblueprint.com/">http://thesuperheroblueprint.com/</a></p>
  
  <p>Please help me.. I really need to fix this so bad..  <a href="http://thesuperheroblueprint.com/">Here is the website.</a>. </p>