If you want a good video player, Quicktime is perfect for your Mac. H.264 is perfect for videos because it allows yout o have good quality videos with minor size. It is available for Mac and Windows and it uses the H.264 video codec, used also by any MPEG-4 HD-DVD, Blu-ray and mobile phones to play videos. It is the official video player by Apple and it also works as audio player and image viewer. QuickTime is more than a simple video player.