found in comments under

https://logosbynick.com/ubuntu-video-editing-software/

https://github.com/mikeycal/the-video-editors-render-script-for-blender

basically if I understand idea correctly it uses same trick as (new) renderfarm script in Cinelerra posted at https://www.cinelerra-gg.org/bugtracker/view.php?id=575

my own idea is to try more advanced yuv4mpeg pipe if you want high-bit-depth encodings/HDR metadata insertion, but so far this seems to be niche thing... 

also found Animation nodes addon for blender, https://animation-nodes.com/ but it reqiures relatively new blender for latest version (git or 2.92)