I recently downloaded some TV shows from itunes, that came in m4v format. I want to be able to burn them to a DVD but I think the DRM protection on them is preventing me. I have tried to find some programs to do this but none seem to work.

I have a fairly exstensive background in programming and am about to just code my own program to do the work if I cant find a suitable program.

My questions are:
a) does anyone know of a program that will convert the DRM protected mp4 format to a DVD ready format with no loss?

and

b) does anyone know of any good resources for the specs on different file formats so I can just start coding my own program for this application? THNX