H.264 video broken after updating to Fedora 28

26 Apr 2018


      After upgrading to Fedora 28, most of Youtube is broken in Firefox, claiming  
lack of H.264 codec support.
Googling around, found this: https://fedoraproject.org/wiki/OpenH264
But none of the packages are currently available:
[root@thinkpad yum.repos.d]# dnf config-manager --set-enabled fedora-cisco-openh264
[root@thinkpad yum.repos.d]# dnf install gstreamer1-plugin-openh264 mozilla-openh264
Last metadata expiration check: 0:00:00 ago on Thu 26 Apr 2018 09:40:47 PM  
EDT.
No match for argument: gstreamer1-plugin-openh264
No match for argument: mozilla-openh264
Error: Unable to find a match
Meanwhile, back on Fedora 27, H.264 video works fine in Firefox, without any  
of this.