www.makemkv.com

It looks like you have the deb-multimedia repo enabled, which is pulling in a different compiled package of ffmpeg. Because makemkv compiles against an internal private ffmpeg function, apt tries to install the version of libavcodec61 from Debian's official repo, but that conflicts with the one pro...

I have not been able to install the testing packages for some time: $ sudo aptitude install makemkvcon The following NEW packages will be installed: ccextractor{a} libdriveio0{a} libgpac12t64{a} makemkvcon{b} 0 packages upgraded, 4 newly installed, 0 to remove and 3 not upgraded. Need to get 10.2 MB...