title: HTML5 increase youtube speed 2x from url?
body: <p>I would like to know how to speed up a youtube video 2x without the user clicking on the HTML5 (of the video), but instead by modifying the URL.</p>
  
  <p>For example, I know how to watch video starting at a specific time by appending to the URL the parameter <code>&amp;t=1m1s</code> (for 1 minute and one second). <strong>Is it possible to use a similar method to speed up the video 2x?</strong></p>
  
  <p>What parameters should I add to the URL to watch video in double speed (I'm using html5)?</p>