I am using Nero to burn my dvds. When I copy a dvd, it only takes about 5 minutes to make a backup of one of my dvd movies onto a 4GB blank dvd. Yet, when I use Nero to turn a bunch of AVI into a dvd (not just a data dvd but a movie dvd), it takes about 2 hours to burn that 4GB DVD. Can somebody explain to me why this is? Is there a way i can get this done alot faster?