I got the same problem, on Ubuntu 15.04. It seems to be related to filetype: Some filetypes still open fine (eg, .avi), but .mp4 and .mkv fail.
It turned out that _removing_ gstreamer1.0-vaapi solved the problem. sudo apt-get remove gstreamer1.0-vaapi Note: my graphic card is a "Intel Corporation Haswell-ULT". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1373978 Title: Totem:"GStreamer encountered a general stream error." on .flv and .mp4 files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1373978/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs