title: How Internet Download Manager grabs URL of online videos
body: <p>I'm developing a software which streams videos from vimeo. But, I don't know how to fetch it's direct URL.</p>
  
  <p>Suppose the URL of vimeo video is: <a href="http://vimeo.com/78848064" rel="nofollow">http://vimeo.com/78848064</a>
  But, IDM captures the direct URL of it as, <a href="http://pdl.vimeocdn.com/82070/105/203391355.mp4?token2=1387027682_29600487ac61980514ca8d3d014ea6a4&amp;aksessionid=561c553c97d5676a" rel="nofollow">http://pdl.vimeocdn.com/82070/105/203391355.mp4?token2=1387027682_29600487ac61980514ca8d3d014ea6a4&amp;aksessionid=561c553c97d5676a</a></p>
  
  <p>So, how is this possible ?</p>