https://cinelerra-gg.org/download/CinelerraGG_Manual.pdf
http://g-raffa.eu/Cinelerra/HOWTO/basics.html
.
+2023 March changes of note:
+ Flac has been upgraded to 1.4.2
+ Tiff has been upgraded to 4.5.0
+ Libjpeg-turbo upgraded to 2.1.5.1
+ Libvpx is now upgraded to 1.13.0
2023 February changes of note:
GPL headers have been added to essentially all program
files with contributor attribution for CV or known author.