title: How to change thumbnail/poster image via URL parameter with YouTube?
body: <p>I have googled this. All I get from that Google search are ways to view/download the three images (0-2) that YouTube creates for a user when they upload a video. Example around that here: <a href="http://www.reelseo.com/youtube-thumbnail-image/" rel="nofollow">http://www.reelseo.com/youtube-thumbnail-image/</a></p>
  
  <p>I was wondering if anyone knows a way to select which one of the three images to use as a poster image when embedding a video. Example: <a href="http://www.youtube.com/embed/_z-hEyVQDRA?rel=0&amp;showinfo=0&amp;thumbnailVersion=2" rel="nofollow">http://www.youtube.com/embed/_z-hEyVQDRA?rel=0&amp;showinfo=0&amp;thumbnailVersion=2</a></p>