How I know anything about this at all: One customer bought a computer from us, with a DVD burner, assuming they could make video DVDs. This is a sheriff's dept. that wants to be able to make DVDs from video files from cop car cameras, for showing in a courtroom. They had the idea in their heads that you could just copy files and it would work.
Turns out the freebie Nero that came with their burner will not author video DVDs. (Full commercial version will.) It will make video CDs (same idea, but with CDR media, and of course, limited in total time). Video CDs will not play on all standalone DVD players, but would on their video room player. I wrote up the procedure (it's pretty straightforward, Nero walks you through it), but they ran into some hitch with menus.
I will probably sell them the Ulead Moviefactory software. It's about as stone simple as it gets.