title: Playing DRM Mpeg-DASH video with VideoJS
body: <p>I'm currently building a website which will use VideoJS 5 to play DASH videos. While the player plays pure DASH videos fine I'm having problems with playing Widevine DRM encrypted Dash videos. The video source is defined as below;</p>
  
  <pre><code>player.src({"type": videoType, "src": urlOfVideoSource , "keySystemOptions": [{
      "name": "com.widevine.alpha",
      "options": {"licenseUrl": "https://proxy.uat.widevine.com/proxy"}
    }]});  
  </code></pre>
  
  <p>The strange thing is that when I play this file: (<a href="https://bitdash-a.akamaihd.net/content/art-of-motion_drm/mpds/11331.mpd" rel="nofollow">https://bitdash-a.akamaihd.net/content/art-of-motion_drm/mpds/11331.mpd</a>)  the player plays it just fine.
  But when I try to play this (<a href="http://html5.cablelabs.com:8100/cenc/wv/dash.mpd" rel="nofollow">http://html5.cablelabs.com:8100/cenc/wv/dash.mpd</a>) the player return me a 'POST 403 error. Both are DRM encrypted.</p>
  
  <p>None of the CableLabs Test Content Widevine videos from Dashif website are working with my player currently.</p>