If you are not finding ffmpeg in the default repositories on Ubuntu 14.04, it’ s because Ubuntu is moving away from ffmpeg and adopting its fork libav. It comes with the package libav-tools and its dependencies. The command avconv is the drop-in replacement for ffmpeg. The alternative to ffplay is avplay.
If you want to install ffmpeg anyway, you can still install it from Sam Rog’s PPA:
$ sudo add-apt-repository ppa:samrog131/ppa $ sudo apt-get update $ sudo apt-get install ffmpeg
OR, you can also install from Kyrill’s FFmpeg next PPA:
$ sudo add-apt-repository ppa:kirillshkrogalev/ffmpeg-next $ sudo apt-get update $ sudo apt-get install ffmpeg