title: MPMoviePlayerController starting image
body: <p>In my app the instance of <code>MPMoviePlayerController</code> I created starts out as a black box, looking like this (because the video starts out black and fades in):</p>
  
  <p><img src="https://i.stack.imgur.com/gQIsN.png" alt="enter image description here"></p>
  
  <p>However I was envisioning something more user-friendly like this, with a thumbnail image, like the example below:</p>
  
  <p><img src="https://i.stack.imgur.com/oEw67.png" alt="enter image description here"></p>
  
  <p>That's a mockup I created but videos in the cameral roll and videos sent in the Messages app use that play arrow. What class do I need to implement to use the stock iOS play arrow?</p>