MakeMKV has been updated to version 1.8.6; which requires FFMpeg version 2.x to compile succesfully. Unfortunately FFMpeg is available only in Fedora 20; so at the moment there’s no way to push MakeMKV 1.8.6 to the repositories.
If you are already running Fedora 20; you should receive MakeMKV version 1.8.6 along with the updates; otherwise please use the provided beta registration key published by the developers:
After starting MakeMKV just press the “Register” button and paste the provided code:
I’ve added a note on the repository page with the registration details.