making mpeg to VOB a good idea?

[MrCaine01]

I have a question. I couple of video files I want to put onto a dvd-r to play in my dvd player. The problem is that the four files I have are about an hour each and I was planning on putting them onto one dvd-r if possible. Also I have a program that let's you turn mpegs and such into dvd-r but I was wondering if the files would be omre work-able in VOB form. If so then what program should I use to convert them?