As far as I know (and it has been discussed on irc), libvpx (http://www.webmproject.org/) needs to be packaged if we want gstreamer to support vp8. Currently libvpx uses a custom build system which does not speed up the packaging process.
A very clean solution would be - from a packaging point of view - to port the custom build system to autotools. But this needs to be discussed with upstream.
Moving this to the gstreamer component for now because gstreamer-plugins is very outdated and it isn't right for "Package reviews" yet. Other than that, yes someone needs to package it with their weird build system.
https://bugzilla.redhat.com/show_bug.cgi?id=593879
Nice. I'm closing this bug as there is already the above review request.