Playing a DVD on Fedora 26 is not too difficult. Once the libdvdcss libraries are installed.
visit http://download.videolan.org/pub/libdvdcss/ and download the newest tar.bz2 package e.g. 1.4.0
$ tar -xvf libdvdcss-1.4.0.tar.bz2 $ cd libdvdcss-1.4.0 $ ./configure $ make $ sudo make install
I had to add the following line to my /etc/ld.so.conf
then a quick
and DVD playback should be working again