DVD Knife is a simple tool for extracting DVD clips from your DVD's.
The clips will be stored in VOB format only.
This tool has the ability to extract long VOB clips in few seconds.
It's so simple that only three steps are needed to extract the clip :
"Select start"
"Select end"
"Save"
Regshot implies that this is portable (I think!)
Download from ... http://www.vcsoftwares.com/dk.html
Extract using Universal Extractor.
Only a single exe file is needed but System files can be included if thought necessary.