First! Our app's can not read protected dvd’s.
That said i did make an (BIG) effort to read some protected dvd’s.
But we need outside help for that.
So what you need to do is go to VideoLan and download libdvdcss and install.
With libdvdcss on your mac Ocrsub can now read crypted dvd’s.
But beware! There is a lot of other protection out there
PS. If you want to read a protected dvd:
what i do is let dvdplayer play for about 10 secs then close dvdplayer and start our app.