Hi, depends how you need to use the CasparCG. The easiest option is to use apt repository version of CasparCG in Ubuntu 19.10 or newer or Debian 10 or newer. If you need CEF however, you will need to build it. Easiest building for linux is done with pre-made docker tools on Ubuntu 18.04. Unofficial instructions for building on Ubuntu 20.04 are here: Building & running server v2.3.0 LTS on Ubuntu 20.04 - #15 by dimitry_ishenko (They were working for me few months ago).