If so, what format do the movies have to be saved

windows media player! via pc!I have a blu-ray disk player and it has a usb port in the back. It also came with an 8 gb memory card that fits into the usb port, can I save videos to the memory card and watch them on the blu-ray player? If so, what format do the movies have to be saved as?How to watch movies on a blu-ray player through the usb port?