I use DVDXCopy and/or DVDXCopy Xpress (a bit of searching will locate these on the web. These are intended to make personal backups of dvds. The former will duplicate a disc, although most films now on dvd, contain more than 4.7gb, and so 2 discs may be required. The latter - xpress, will remove all the extras off the disc, ie subtitles, traillers etc and compress and record just the main film.
Hope this is of some help.