DGMPGDec

DGMPGDec is an MPEG decoder suite. It is used to decode MPEG1 or MPEG2 streams from such sources as DVD VOBs, captured transport streams, *.mpg/*.m2v/*.pva files, etc.

Perhaps its most common use is in decoding VOBs from DVDs.
You need the DGMPGDec package and Avisynth. First get Avisynth 2.5 (or better) and install it: