VIDEO_TS folder succesfully decyrpted using mac the ripper can't be compressed using DVDRemaster

I've ripped, compressed and burned countless DVDs using mac the ripper, DVDRemaster, and Toast Titanium, but I've just ripped a DVD which will play perfectly using DVD Player, but is 6.34GB so requires compression. When I try to compress it using DVDRemaster, It says that it has successfully compressed the file to 4.34GB, but the output file is only 2.2GB. When I try to play the output file on DVD Player or VLC, it only plays to a specififc point, and then the video stops proggressing, but the audio is fine and keeps going for the rest of the movie. I've tried re-compressing many times, even with the DVD-Downsizing module rather than the DVD-Reqauntisizer with no success. Any advice?

 

Sounds like some kind of disc error to me. Re-rip it or try dvd2onex to compress it.

MG