Does anyone have a method using "purely" linux programs, to backup a DVD9 to a DVD5 (and still retain the original menu's), without using an MS-Windows program running under wine (such as IfoEdit and VobBlanker) ?

Backing up the main title doesn't seem to be a problem for me (using only programs compiled specifically for Linux). But without resorting to "wine", I haven't been able to find a way to keep the original menus (and also keep multiple sound-tracks, and subtitles) during a DVD9 to a DVD5 backup.