my previous solution does not work anymore. Here is a new way of making it work:
http://www.linuxfromscratch.org/blfs/view/svn/multimedia/gst-ffmpeg.html The Gstreamer 1.0 does not seem to be a solution for "normal" people, the necessary patches are not even accepted in firefox, there are no (known ?) backports of the patches for firefox 28 and on machines with less than ~6Gbytes of ram it is not even possible to compile firefox. I understand that Debian has eliminated the gst-ffmpeg package, but Ubuntu has no reason to break something that works. In the mean time, you can get it working in under 5 minutes thanks to linuxfromscratch. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1280905 Title: firefox on ubuntu 14.04 does not play mp4 files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1280905/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs