title: Google Chrome HTML5 video caching
body: <p>I developing a website. Now a added a HTML5 video. This works fine.
  The problem is if I change the video file in the background. So the user can upload a new video file. Chrome still gets the old video URL but playes the old video from cache. 
  It even playes the cached video after restarting chrome.
  When I disable the cache everything is fine.</p>
  
  <p>Hope someone can help me.</p>
  
  <p>Thx</p>