How to correctly fix error installing ffmpeg dependency Package?

I am attempting to install a dependency for the ffmpeg package

The dependency is libgnutls30 (version 3.5.3.2)

The error is: Breaks existing package 'libgnutls-openssl27' dependency libgnutls30 (=3.4.10-4ubuntu1.1)

Do I force install this specific dependency? If not, how do I get around this error? I cannot install any other dependencies for ffmpeg, nor can I install the complete ffmpeg package, until I get this error resolved. Also, extracting the dependency file and manually installing this specific dependency, either by replacing version 3.4.10, or manually installing as an addition to version 3.4.10, does not work as I still get both the error message and unable to complete full installation of ffmpeg and other related dependencies.

Thank you for any assistance you may be able to provide.

Lubuntu 16.04