You can rip dvd’s with multiple tools, and some of these rip the dvd to a ‘VIDEO_TS’ and ‘AUDIO_TS’ folder. You can burn them again with the tool mkisofs.
Place your ‘VIDEO_TS’ and ‘AUDIO_TS’ in a folder (lets say /home/user1/mymovie/)
trouble@sun:$ apt-get install mkisofs
Then use mkisofs to create a ISO file from the folder:
Now in /home/user1 you have a iso file called ‘mymovie.iso’
now use brazero or any other burning tool to burn the .iso file to a DVD.