Vaguely, I think I've seen inquiries about this sort of software here in the past. So when I saw this, I thought I'd mention it here - perhaps it will be of use to someone.
I cannot comment on it, as I don't burn DVDs.
I have used software from this site in the past, and it seemed like it worked fine.
http://www.giveawayoftheday.com Free - for a little more than 8 hours from now.
"Wondershare Video to DVD Burner is a fast video-editing and DVD-authoring application. In just five steps, you can easily convert and burn all popular video files (AVI, MP4, MPG, MPEG, 3GP, WMV, ASF, RM, RMVB, DAT, MOV, FLV) to DVD for backup and enhancement. "