OpenSUSE Multimedia :: DVD Authoring: Not Seeing The Whole File

I've been trying to author a dvd, using an xvid avi. I've tried several authoring programs (the last I tried was 2manDVD). Every time I add the file to the project, it comes up as being 102 seconds long, when it is really something like 42 minutes.

I do have things set up enough that the file plays well in a media player on the computer.

Also, what is the best program to use for this sort of thing (taking an xvid file and converting/burning it so I can pop it in the dvd player). On windows I used to use the Windows DVD maker application, which was clunky and terrible but got the job done!