Here is a pretty good FAQ that deals with the following 3 scenarios...

"There are 3 options, if you have:

1:/ An original DVD that is Single Layer
2:/ An original DVD that is Dual Layer but the actual movie is small enough to fit directly into a 4.3GB DVD-R. (ie the DVD is full of extras that you can lose)
3:/ An original DVD that is Dual Layer and the actual movie is NOT small enough to fit directly onto 4.3Gb. "


Quoted from the following page:

http://www.vcdhelp.com/forum/viewtopic.php?t=109346


Sometimes it's just cheaper to buy the movie... Gladiator took about 27 hours to remaster on my PC... Good Luck!!!