title: How to implement Google IMA into videojs?
body: <p>I am struggling implementing and generating my <code>adTagUrl</code> into my demo example.</p>
  
  <pre><code>var options = {
    id: 'content_video',
    //adTagUrl: 'http://pubads.g.doubleclick.net/gampad/ads?sz=640x480&amp;' +
      //  'iu=/124319096/external/ad_rule_samples&amp;ciu_szs=300x250&amp;ad_rule=1&amp;' +
       // 'impl=s&amp;gdfp_req=1&amp;env=vp&amp;output=xml_vmap1&amp;unviewed_position_start=1&amp;' +
       // 'cust_params=sample_ar%3Dpremidpostpod%26deployment%3Dgmf-js&amp;cmsid=496&amp;' +
       // 'vid=short_onecue&amp;correlator='
     adTagUrl: 'https://pubads.g.doubleclick.net/gampad/ads?sz=640x480&amp;iu=/265894175/Video&amp;impl=s&amp;gdfp_req=1&amp;env=vp&amp;output=vast&amp;unviewed_position_start=1&amp;url=[referrer_url]&amp;description_url=[description_url]&amp;correlator=[timestamp]'      
  };
  </code></pre>
  
  <p>As you can see the <code>adTagUrl</code>s are somewhat different and the one I use does not show any ads while the example <code>adTagUrl</code> works flawlessly. </p>
  
  <p>The error message I receive is:</p>
  
  <pre><code>AdsLoader error: AdError 1009: The VAST response document is empty. 
  </code></pre>
  
  <p>How do I generate one out of my Doubleclick dashboard or how do I configure it to work with videojs?</p>
  
  <p>Thanks so much in advance!</p>