Correction to my initial post. I meant to say the video portion of the xvid file was converted at 23.976 fps with a 3:2 pulldown making it 29.97fps which is why I believe the resulting m2v file is sli ...
Source format - 700MB xvid file (sound embedded in file)
Destination format - MPEG2 (DVD)
TMPGEnc settings used as outlined on this dvd-hq.info site.
Playback method - a ...