Ah my mistake. I was missing the bad-multiverse plugins. It's working now that I have them installed.
I would still say this is a bug but that the problem is the error message. It should report something like "Element does not implement handling of this stream. Maybe you need to install the codec plugins for mp4?" Telling me to report a bug is probably not the appropriate response. -- mp4 fails to play, with error https://launchpad.net/malone/bugs/39071 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
