http:/ / www.dvdshrink.org/
DVD Shrink is a great freeware tool for fitting your DVD-video onto a single DVD-R disc. It permits you to select compression levels up to 50 percent for each video track, preview files, and manage media assets. DVD Shrink provides two ways of shrinking your DVD disk. These are re-authoring and re-encoding. You can use one, or the other, or for maximum "shrinkage", both combined. (The only downside to this application is that it requires another authoring program to make burn of the backup.)