Affects me too on Xubuntu 14.04. Installed all the relevant gstreamer plugins but still no video, only audio. Also tried Firefox trunk builds (from mozilla daily ppa) and still no effect.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/998569 Title: Embedded MP4 only plays audio in browser window To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/998569/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs