Jumpy video after DVD to xbox convert (WMV)

Im trying to rip a DVD into WMV format for use on an xbox via window media center.

Once the file is completed, the video is jumpy. The audio will play constant… but the video will freeze for 3-5 seconds every minute or so.

I just installed DVDFab - any suggestions?

Where as if I try to convert to a general .avi, the issue does not occur.