I am having an issue with exporting to MPEG4 out of Final Cut Express. I set the export video date rate to restrict it to 750 kbits per second with a audio rate of 64 kbits/sec/. When i go to play the video. it says it's 839 kbits per second. What's the problem with this picture? There's mire kbits/sec than there should be! What is going on here?