[peaktime]

I'm sure there are programs that will do the conversion from mpeg4 to mpeg2 so you can author a dvd, such as tmpgenc xpress, but you will lose quality, and blow up the size a lot. Mpeg2 and dvds was the old way, but now mpeg4 and blu-rays are the new way. Mpeg4 compresses smaller and with higher quality than mpeg2. For the best quality, author a blu-ray directly from the mp4 (don't re-encode), or just seed the raw mp4 if they will let you. There are a number of different blu-ray authoring programs available.