Please check the BDinfo to find out the 3D title and then go to the "Choose other Titles" section to pick that title to see the result.
Mona
As described above by mechashiva, Jaws 3D contains three different 3D titles: 300, 400 and 800. All three show as
Codec Bitrate Description
----- ------- -----------
MPEG-4 AVC Video 0 kbps Left Eye / 1080p / 23.976 fps / 16:9 / High Profile 4.1
MPEG-4 MVC Video 0 kbps Right Eye
Through trial and error I have found that DVDfab selects the wrong title by default. It selects 800 which it sees as needing 2D to 3D conversion. If you rip 300 you end up with a 20 second 2D file. 400 produces a complete file...I think. More testing is needed.