https://cinelerra-gg.org/download/CinelerraGG_Manual.pdf
http://g-raffa.eu/Cinelerra/HOWTO/basics.html
.
+2021 June New Features of note:
+ High fps rendering formats added for over 60 fps.
+ Upgrade of libjpeg-turbo to 2.1.0.
+ Additional mxf + other rendering formats added.
2021 May New Features of note:
Context Help has been added using hotkey Alt/h by Georgy. The
help page will come up in your web browser tab for the item