OK - understand better now. Your TV model must not support playing MP4 natively since both the "Sony Bravia KDL (2011 Models)" and "Sony Bravia KDL (2012 Models)" device profiles deliver your MP4 files natively to your TV (and your TV refuses to list them), whereas the "Sony Bravia KDL (2010 Models)" device profile transcodes your MP4 files to another format (and your TV does list them). How does the "Sony Bravia KDL (2010 Models)" device profile perform with your other files? If it performs OK, then I suggest you stay with this device profile.