A workaround I just found: go to /usr/share/thumbnailers edit totem-video.thumbnailer instead of using totem-video-thumbnailer use ffmpegthumbnailer -i %u -o %o after having installed it then cancel the folder ~/.thumbnails/ Finally logout and login
-- 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/977048 Title: Totem fails to play mp4 files originating from youtube To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer0.10/+bug/977048/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs