This fixed it immediately for me: sudo apt remove gstreamer1.0-vaapi
Not sure why this is causing a problem, though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1825628 Title: Totem not playing some files correctly (sound but no video) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1825628/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs