title: videojs player does not play when poster image is available
body: <p>A client is using videojs in their wordpress theme and I am trying to figure out why when I add a poster to the video, the video does not ever 'buffer' or play.  It sits there with the 'loading' spinner, but it will never play.</p>
  
  <p>When I remove the poster (thumbnail) from the player, the video plays just fine.</p>
  
  <p>I am using this shortcode in wordpress:</p>
  
  <pre><code>[videojs mp4="http://video-js.zencoder.com/oceans-clip.mp4", poster="http://moviewriternyu.files.wordpress.com/2013/08/mclovin-license.jpg"]
  </code></pre>
  
  <p>If I remove the <code>, poster="http://...</code> the video plays just fine.  </p>
  
  <p>Has this happened for anyone else?</p>