Some users need codecs, etc. in order to use DVD products. Extra software and some proprietary software to get Disk Data to work.
sudo apt install libdvd-pkg
Say "yes" at prompts
sudo dpkg-reconfigure libdvd-pkg
To install Restricted Extras:
sudo apt install ubuntu-restricted-extras
Hold down the Down Arrow key all the way to the bottom, then once to the Right Arrow key to click "ok"