Application like dvdshrink or Nero Recode

[Bob Alexander <bob@ngi.it>]

When I buy DVDs for my kids, first thing I do is make a copy for two 
main reasons:

1) Store the original safely (mine are still little critters with 
horrible manners and dirty fingers .-<)

2) Crop away all the crap that is in front of the cartoon/movie, 
commercials, piracy notices, menus (not an intellignet feature on DVDs 
meant for pre-schools kids !!!) etc.

Under XP I used DVDShrink and/or Nero Recode (which badly looks like a 
clone of the former).

The functions I need is to be able to reauthor choosing the proper VOBs, 
selecting the proper languages only and sometimes clipping out segments.

Any decent FLOSS alternatives ?

TIA,
Bob