Problems Playing Bonus Features

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Last night I watched trick r treat for the first time. The movie and menus all played perfectly fine. Then I went to watch a documentary in the bonus feature section, and the picture size shrunk to about 1/12 of the screen size. I had never seen it before so I assumed that it was meant to be like that.

I then watched Childs play. once again the movie and menus all worked fine, but again the bonus feature shrunk. I had seen it before so I knew it wasn't supposed to do that. I tested it again with cujo with the same results

I have no clue why this is happening. I have a ps3 and have never heard of this occurring before. If anyone has any advice it would be greatly appreciated.