Skackbuilds.org obvious for Slackware and Slackware-based distros, like SalixOS [0]

https://github.com/SlackBuildsOrg/slackbuilds/tree/master/multimedia/cinelerra

contain a bit older version of CinGG

gitlab mirror, empty (?)

https://gitlab.com/cinelerra-gg/cinelerra-gg

ubuntubuzz micro reviews

https://www.ubuntubuzz.com/2022/06/video-editors-on-ubuntu-floss-alternatives-to-premiere-movie-maker.html?m=1

https://www.ubuntubuzz.com/2022/01/install-cinelerra-and-natron-professional-video-editor-and-compositing-vfx-on-ubuntu.html?m=1

[0] - https://forum.salixos.org/viewtopic.php?f=17&t=8409&sid=94d2477c8afcb9b0e15302c372ff69ef&start=10