What is the ideal bitrate if quality is the only thing that matters? I could just go all the way to 5000kbps but I'm guessing that anything over about 3000kbps does nothing to quality and only increases file size. However, if 5000kbps does anything at all for quality I'll use it. Also, can I get full 720x480? The AppleTV settings are only 640x480 or 960x720. I was hoping to keep my native resolution.