This time its an issue with our own packages:) I just released new kaltura-ffmpeg and kaltura-ffmpeg-devel which should solve it.
Since it may take time for it to hit your CDN edge, you can change /etc/yum.repos.d/kaltura.repo to look at http://installrepo.origin.kaltura.org instead of http://installrepo.kaltura.org so that it takes it from the origin server.
Note however, that unless you intend to do some compilations against FFMPEG, kaltura-ffmpeg-devel is not needed for the operation of Kaltura CE, so you can just remove the -devel package altogether.
Let me know if you have further questions or issues post upgrading.
Thanks for reporting