you have to consider the individual movie per se. there are programs available for dvd ripping (ie...dvd shrink, dvd decrypter, and so on). that being said, the majority of major releases are on dvd-9 dics. however, dvd-r are a dvd-5. the difference?? dvd-9 is 9+ gb while dvd-5 is 4.7 gb. hence, you must shrink the movie to fit to fit it on the dvd-5. the best way to do this is to completely strip out all the menus, special features, subtitles, and different audio languages. really, have you ever watched lord of the rings in portuguese? back up quality of 70% or more is pretty indistinguishable from the original. i've seen backups that were about 55% of the original. not too bad, but some scenes were a bit overly pixelated. i'll agree with gunbei....taiyo yuden discs are amongst the best available. check afterdawn.com forums for further info on backing up your dvds.