------------ Original Message ------------ > Date: Tuesday, September 08, 2015 14:57:22 -0700 > From: Robert Arkiletian <robark at gmail.com> > > I was able to get h.264 support on www.youtube.com/html5 on fedora > 21 by installing > > gstreamer1-libav > > but that package does not exist in C6 (or it's popular third party > repos) > > What is the name of the package which adds h.264 to firefox on > youtube/html5 in C6? I think you'll find that package in the nux repo: gstreamer1-libav.x86_64 1.0.6-1.el7.nux I don't know if that will do what you're after, and I can't try this out as my desktop machines are all C7. More detail on that repository can be found at: <https://wiki.centos.org/AdditionalResources/Repositories>