NetBSD

I recommend installing libdvdcss and libdvdread directly from pkgsrc. The binary packages aren't built for support with libdvdcss.

Make sure pkgsrc is installed first:

ftp ftp://ftp.netbsd.org/pub/pkgsrc/current/pkgsrc.tar.gz
tar -zxf pkgsrc.tar.gz -C /usr

Download and install libdvdcss:

cd /usr/pkgsrc/distfiles
ftp https://download.videolan.org/pub/libdvdcss/1.4.1/libdvdcss-1.4.1.tar.bz2
cd /usr/pkgsrc/multimedia/libdvdcss
make
make install

Install libdvdread:

cd /usr/pkgsrc/multimedia/libdvdread
make
make install

Despite it whining about not linking against libdvdcss, the build will.

Afer that, download dvd_info and install as normal :)

autoreconf -fi
./configure
make
make install