I often want an easy command line way to easily backup a standard definition (non-BlueRay) DVD to and ISO image. The command line is nice because I can do it remotely on an idle MythTV Frontend machine and can copy the resulting ISO right to the mounted Movies folder.
Get DVD Info
dvdbackup -i /dev/dvd
Backup whole DVD
dvdbackup -i /dev/dvd -o ~ -M
mkisofs -dvd-video -udf -o ~/dvd.iso ~/MOVIE_NAME
The information was taken from here: https://wiki.archlinux.org/index.php/Dvdbackup