I wouldn't be surprised if MPEG-2 support was missing by default due to licensing/patent restrictions.
Please try this command: sudo apt install ubuntu-restricted-addons and tell us if it improves the situation. ** Changed in: gstreamer1.0 (Ubuntu) Status: New => Incomplete ** Changed in: totem (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/1809044 Title: DVD playback error: unable to play . . . DVD source is required . . . To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1809044/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs