title: HTML5 video - playing only a portion of a video
body: <p>Is there some straightforward technique to play only a certain part of a HTML5 video? For example in a 30 second clip I would like to play only the part 5-20 sec. Additionally the rest of the video should not be accessible from the UI at all (meaning the video timeline should only show the 5-20 sec part).</p>
  
  <p>I've been going through some HTML5 video players but none of them seem to be supporting this kind of functionality. If anyone knows a (good) way to implement this feature please give me a hint.</p>
  
  <p>Thanks in advance!</p>