The easy and free (as in freedom and free as in beer) way to encode an .avi movie to DVD format and burn it to a DVD is to simply install devede from the Ubuntu repos:
Originally Posted by inman2787
Just open a terminal and run:
Or use synaptic, or the Software Center, which ever you like, and you will be good to go.
sudo apt-get install devede
The only other thing you will need is the popcorn!
Write back if you need more help.