Corrected in version 0.10.2-0ubuntu1 of gstreamer0.10-ffmpeg (available for Ubuntu feisty)
-- Totem can't play flash video files (*.flv) even though ffmpeg supports them https://launchpad.net/bugs/53219 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs