I've read over and over here on the forum that if the output movie will fit on a dvdr, there is no compression of the video. However, I have my doubts, since I made a slideshow using Ulead DVD Pictureshow 2 for a friend of mine. This program will make a dvd that displays a menu allowing you to choose which slideshow you want to watch. There was only one slideshow on the dvd, so I wanted to skip the menu and make it just go to playing the slideshow when the dvd was put into the player. So, I used DVD2one in movie-only mode. The whole slideshow was about 125 MB, so compression was totally not needed, but the resulting VOBs were a little smaller than the original. I also noticed some slight jerkiness in some of the fade transitions. So, I used DVDtoolbox (www.dvdtoolbox.de) and came out with a better result. It does no compression at all, and is free. I think DVD2one is one of the best programs I've ever bought, but if I want movie-only, and if the movie looks like it will fit after ripping with dvddecrypter, I use DVDtoolbox. Even if your rip is over 5 GB, after stripping out unneeded audio streams and subtitles, it might be all you need, and it's a little faster, too.