Hi,
I wrote a small script for converting video files into DVD compliant encodes and structures. The main reason for writing it was so I can watch DVDs on my Medion TV which has an integrated DVD player, but doesn't support DivX/Xvid and co codecs. The output from the script works with no issues on my DVD player but I can't guarantee it will do the same on other DVD players. Best is to test and see.
Requires bc, MPlayer, ffmpeg (for encoding), dvdauthor and mkisofs (which should be a link to genisoimage)
http://sourceforge.net/projects/file2dvd/
PS: this script is dedicated to my mom, who's a big movie lover and who passed away from cancer on the 26th of January 2013.