If install and use Aurora 30.0a2 (2014-04-04) on the same PC, i could no see again H264/MP4
In attachement, for information, libav-tools ** Attachment added: "apport_libav-tools" https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1051559/+attachment/4067315/+files/apport_libav-tools -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1051559 Title: Build Firefox with GStreamer 1.0 support To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1051559/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs