I've tested that clip here and was asked to install the "bad" codecs which I did, and then restarted Totem and it played back ok.
That video clip appears a bit strange, in that it's h264 video and mp4 aac audio inside an MPEG2 TS. Do you have Nvidia graphics hardware? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767089 Title: totem cannot play h.264 on 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1767089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs