VOB to WMV: Output file of 45 seconds

Recently a Windows Media user contacted us on a problem he came across; from his own words:

Specifically I am trying (rather unsuccessfully) to go from VOB to WMV files with WME.  No matter what I do, I always get an output file of 45 seconds even though the VOB is 1GB and plays for about an hour in Windows Media Encoder.  I use InterVideo's DVDXPack to enable DVD playback in WMP.

Any ideas why I can't get more that 45 seconds?

This kind of behavior usually occurs when Windows Media Encoder has to operate under an incompatible directshow filter configuration. To modify the directshow filter configuration we linked him to How to overcome DirectShow filter problems.