For CentOS package install, first create the file /etc/yum.repos.d/cin_gg, with the following contents:

[cingg]
name=cin_gg
baseurl=https://cinelerra-gg.org/download/pkgs/centos
gpgcheck=0
# end of cingg

Then run this command to install it:

    yum install cinelerra

To remove Cinelerra-GG run:

    yum erase cinelerra