DEMUXING VOB TO MPEG2 :)
If your image is protected by CSS you need a ripping software to copy the VOB files to your hard disk and DECSS them. Then you need a program to convert VOB files to an MPEG2 stream or any other format.

I once did this for a DVD that i lost the original material for. But i worked on a PC. I used SmartRipper to rip the VOB files to the hard disk then i used DVD2AVI to convert the VOB to AVI. Then i reencoded into MPEG2.

Note that you will find all menus in VIDEO_TS.VOB file. If you have motion menus they will be part of this video. If you have still menus each one will be one frame in this video file.
VERSION: N/A AND ALSO...
SOURCE: Shady Samir