go buy a disc with sony's name (that's been made in the past year) on it. try to rip it with dvd shrink. partly through the process you will get "dvd shrink has encountered and error and can't continue"
the last version of dvd decrypter (they were force to shutdown by the courts, so did shrink) can get around that accros protection but not the new ripguard (the past few months) protection
only certain dvds has these protection. you can copy most dvds