Hi, I just bought a capture unit for my pc. It's my first so I know very little about the whole process. I need help figuring out why the total amount of recording time on my pc is only 1 hour and 11 minutes in the best quality mode. Even in the lowest quality, I can only get 1 hour and 30 minutes. Why? In the back of the book it says something about using a NTSF formatted hard drive instead of FAT...which is what I'm using. Could that be an issue?