title: Airplay: Playing a Movie from MPMoviePlayerController results in only audio being streamed to Apple tv
body: <p>Setting up Airplay was easy enough.</p>
  
  <pre><code> self.moviePlayer = [[[MPMoviePlayerViewController alloc] initWithContentURL:url] autorelease];
   [self.moviePlayer setAllowsAirPlay:YES];
  </code></pre>
  
  <p>However, when I try to play a video, only the audio is streamed. The video continues to play on the iPad.
  Additionally, the Airplay control only shows the "Audio Only" icon in the source list. (see photo).</p>
  
  <p><img src="https://i.stack.imgur.com/26nap.png" alt="enter image description here"></p>
  
  <p>This makes me think that iOS "thinks" that only audio is playing.
  I have several other apps with Airplay on my device and they work correctly. I have cycled both the Apple tv and the iPad on and off. Both the iPad and the Apple tv have the latest OS installed. The video is being progressively downloaded, but it plays perfectly on the iPad.
  Any ideas?</p>