I need to do a quick conversion of some mp4 videos to DVD-video. For conversion of mp4 files to DVD-Video I usually use ConvertXtoDVD, but now I have to convert few mp4 files which this program cant convert. It says "MP4S codec is not supported". What program should I use for this case?
I can play this files, but I cant convert it...

Info from GSpot about those videos:

codec: avc1
status: Codec Status Undetermined
name: H.264/MPEG-4 AVC
mp42: MP4 v2 [ISO 14496-14]
- isom: MP4 Base Media v1 [IS0 14496-12:2003]
- avc1: MP4 Base w/ AVC ext [ISO 14496-12:2005]

I think the first thing I would try is installing the k-lite codec pack. That seems to remedy most codec problems I've encountered.

Try AVIDemux...