It appears again on Ubuntu 17.10 Totem message:
** Message: Missing plugin: gstreamer|1.0|totem|H.264 (High Profile) decoder|decoder-video/x-h264, level=(string)3.1, profile=(string)high, interlace-mode=(string)progressive (H.264 (High Profile) decoder) And I already install gstreamer1.0-plugins-ugly $ apt policy gstreamer1.0-plugins-ugly gstreamer1.0-plugins-ugly: Installed: 1.12.3-1 Candidate: 1.12.3-1 Version table: *** 1.12.3-1 500 500 http://opensource.xtdv.net/ubuntu artful/universe amd64 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1562875 Title: Totem can't play H264 on fresh 16.04 beta install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1562875/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs