title: Video url cannot be found when scraping page
body: <p>I want to download the video from the following page:</p>
  
  <p><a href="https://www.indiegogo.com/projects/protest-the-hero-new-album--3#/" rel="nofollow">https://www.indiegogo.com/projects/protest-the-hero-new-album--3#/</a></p>
  
  <p>Using Firebug, I can see the url of the video,</p>
  
  <pre><code>&lt;video src="https://09-lvl3-pdl.vimeocdn.com/01/1449/2/57246728/138634997.mp4?expires=1457996449&amp;amp;token=089e435c20e7781d36fce" preload="metadata"&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>However, I tried to scape the page using Python, this sentence is lost and I could not get the url. I also tried Selenium, but the same problem remained. How could I access the video url with my scraper?</p>
  
  <p>Also, it seems that the video url does not work. How could I get the url from which I can download the video?</p>