title: iOS AVPlayer render to texture
body: <p>I'm trying to understand AVPlayer, but the samples on Apple documentation are not really straightforward and I'm having some issues.</p>
  
  <p>What i need to do is to create a Render To Texture from a movie, so that in my scene i can use that to map it in an OpenGL texture (this has be done EACH frame!)</p>
  
  <p>To my understanding, i think i should use AVURLAsset but i'm not really sure.</p>
  
  <p>Can anybody pinpoint me in the right direction? Also, if you have any knowledge of a simple Video->RTT sample for iOS that would be great (couldn't find anything by googling)</p>