MP4 video on F23

[Michael Schwendt]

On Wed, 09 Dec 2015 12:36:30 +0000, Patrick O'Callaghan wrote:

> From negativo17.org. They have a Fedora repo. I assume they compiled HB
> from sources. It seems to run fine on Fedora.
> 
> Note that my problems with MP4 pre-date my installing HandBrake. In
> fact I installed it to help extract some home video DVDs which don't
> play on Fedora.

Seems you've run into a repository mixing trap:

$ rpm -qpR ffmpeg-libs-2.8.3-1.fc23.x86_64.rpm |grep cenc
warning: ffmpeg-libs-2.8.3-1.fc23.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID f90c0e97: NOKEY
libvo-aacenc.so.0()(64bit)

That's for this package:
http://negativo17.org/repos/HandBrake/fedora-23/x86_64/ffmpeg-libs-2.8.3-1.fc23.x86_64.rpm

So, the dep on that lib is present, but your installation is broken
nevertheless. And the lib likely is offered somewhere in that repo.