Tested on Ubuntu 14.04 with Firefox 30 from Canonical : we can see H264's video. Bug Fixed for me
** Changed in: firefox (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1051559 Title: Build Firefox with GStreamer 1.0 support Status in The Mozilla Firefox Browser: Fix Released Status in “firefox” package in Ubuntu: Fix Released Status in “iceweasel” package in Debian: Fix Released Status in “firefox” package in Fedora: Unknown Bug description: Building Firefox with GStreamer support would provide support for a lot of websites that use h264. To build Firefox with GStreamer support you should use the "--enable-gstreamer" option. To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1051559/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp