I've only just got around to burning a couple of DVDs. I've discovered most DVD-R discs are 4.7Gb or 120mins. How do I burn a 2-hour film onto a disc? I managed to get the burner to compress the film but the quality is too low. Are there any larger DVD-Rs available? Not the dual layer ones because I expect they require a different type of burner. If not, are there any other tricks to compress the film but keep it good quality? Many thanks.