GIT for Cinelerra-GG has the following changes from 01/01/2023-0131/2023
Memory leak bug as discovered/reported by Stefan that was in December’s AppImages has been fixed.
New video render format of h264_nvenc.qt was contributed by Rob.
A new shell command to easily delete background rendering files in the tmp directory with the names
 of brender* has been added as suggested by fary54. Unless you start with a new $HOME/.bcast5,
 you will not see it because it may conflict with your custom shell scripts, but instructions of how to
 resolve this can be found in the Manual.

Andrew R’s work includes:
Minor build fix for libbthread-master Makefile for netbsd 12.3 amd64.
Fixed the NetBSD and bsd builds to make them error free. These fixes ensure that there is no impact to
 the builds for Linux and termux.
Responsible for finding an ffmpeg 5.1 patch to speed up rendering by as much as 47% on VP9 4K/8K
 raw videos on computers that have 64 cpu-s and 20-30% speed up if 32 cpu-s.

Manual changes and new sections:
The Proxy section in the Manual Advanced Editing chapter has been completely reworked to correct
  errors, make it more readable, and much easier to follow.
Procedure to create PiP – Picture in a Picture has been documented in the Manual.
Authors and Contributors section is now in the Manual so that this information is retained across time.
If you want your name included or excluded, let us know.