If time weren't an issue... (Score 1)

Why not learn yourself how a DVD is made? What file structure & what files a dvd-player wants. Write scripts to avoid repetative tasks. But that is basically all these programs do. They write the files that a dvd-player requires, in the structure they need to be in. But thats for the menus, as far as the whole package with video stream & menus... you CAN do this in linux too using existing command-line programs

HOWTO - author AVI -> DVD with menus in linux

Yea... kinda geeky, and you will need to build a lot of scripts until somebody (OR you!) makes some sorta GUI version of it all.