https://cinelerra-gg.org/download/CinelerraGG_Manual.pdf
http://g-raffa.eu/Cinelerra/HOWTO/basics.html
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+2022 October changes of note:
+ Speed up using direct copy for EXR and PPM sequences.
+2022 September changes of note:
+ Flac has been upgraded to 1.4.0 from 1.3.2.
+ Tiff has been upgraded to 4.4.0 from 4.3.0.
+ New render formats - vp9.webm & ALAC, Apple Lossless audio.
+2022 August changes of note:
+ FFmpeg has been upgraded to 5.1 from 4.4.
2022 July changes of note:
Libaom upgraded from 3.2.0 to 3.4.0.
Libvpx upgraded from 1.11.0 to 1.12.0