From VSO Software:
Copy your DVD movies as backup. The copy process is extremely fast and does not affect the quality of the video. DVD and ISO input files supported. Burning engine integrated and menus are created. DVD to DVD supports subtitles, bonus, multiple audio tracks. Copy original chapters to your new copy. Special settings allow for copying forced subtitles and using Cuda for processing. No advanced skills necessary. A live preview allows you to watch the conversion process.