Answers: IMHO, the two best free programs on the bazaar are DVD Shrink at
http://www.dvdshrink.org/what.html and DVD Dcrypter at
http://www.mrbass.org/dvdrip these are free programs that work comparatively in good health.
If they don't work, later the DVD is encrypted near so-called "Puppet Lock" after you'll have need of a program similar to Magic DVD ripper, a payware program, but suitable.
DVD Fab Decrypter is another moral one.