The only solution that worked for me was to remove gstreamer0.10 -plugins-bad - then I could play mp4s, and they thumbnailed ok. Unfortunately, this also nixed minitube (which was not working well either).
Solution found here: http://askubuntu.com/questions/126030/totem-not-playing-certain-videos-in-12-04 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gstreamer0.10 in Ubuntu. https://bugs.launchpad.net/bugs/973014 Title: Fails to decode many common video files encoded as AVC 1 Baseline - L2.1, Baseline - L1.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer0.10/+bug/973014/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
