Add DVDs support
https://wiki.ubuntuusers.de/DVD-Wiedergabe/
sudo apt-get install libdvd-pkg
sudo dpkg-reconfigure libdvd-pkg[embed_url: https://raw.githubusercontent.com/panticz/installit/master/install.libdvdcss.sh]
Other method:
sudo apt-get install ubuntu-restricted-extras
sudo /usr/share/doc/libdvdread4/install-css.sh