On Fri, Sep 11, 2015 at 3:38 AM, John Hodrien <J.H.Hodrien at leeds.ac.uk> wrote: > On Fri, 11 Sep 2015, Robert Arkiletian wrote: > > does anyone running C6 have h.264 check box on www.youtube.com/html5 ? >> >> if yes, can you please post the output of >> > > My understanding, which may be incorrect, was that the firefox in EL6 > wasn't > built with gstreamer support, so adding that library isn't sufficient. This makes sense as I remember reading the latest versions of Firefox supporting gstreamer1 not 0.10. That's probably why gstreamer1-libav works with Firefox 40.