You can check the following thread out for Movie Only to Single layer Dvd. My general rule of thumb for movie only is not to go below 70%. For Dual Layer, you can do a full rip with DvdFab & use ImgBurn in Build Mode. It would start at Post #67 through to #74, but also please read #78. Both these would use a setting of Dvd9.

http://club.cdfreaks.com/f116/dvdfab...36/index3.html

http://www.imgburn.com/

http://forum.imgburn.com/index.php?showforum=4