Since I can’t find it anywhere online currently here’s the Features5.pdf file from Cinelerra-GG 09/30/2018 release. It documents the Cinelerra-CV and Cinelerra-GG feature set.
Also, it coincidentally has the VP9 settings for Cinelerra that I couldn’t find listed anywhere else under chapter 3.4. Hopefully this helps anyone else whom can’t find it on the Internet while searching.
And since you might be looking for the Cinelerra video editor you can find the -GG version at the project’s website.