Problems installing in Ubuntu 18.04

[Davte]

The problem

The suggested installation command failed on my machine:

sudo apt install texlive-extra-utils libav-tools

Missing head file /usr/share/texlive/texmf-dist/tex/generic/config/language.us.lua: No such file or directory at /usr/sbin/update-language line 139.

Package libav-tools is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  ffmpeg:i386 ffmpeg

E: Package 'libav-tools' has no installation candidate

I think the reasons may be

• ffmpeg outdates libav-tools and can be installed instead of it
• A precedent texlive installation is creating trouble for texlive-extra-utils

The solution

sudo apt-get remove --purge tex-common texlive-*
sudo apt-get install texlive-base
sudo apt-get install tex-common
sudo apt-get install texlive-latex-recommended
sudo apt-get install texlive-extra-utils
sudo apt-get install ffmpeg

[Davte]

Solved for me