may be it always was like this? (but may be you can spin VM with older distro for testing) 

may be we need some FFMPEG_LIST subtype of output, calling down into fileffmpeg, so Cinelerra does usual list keeping, and ffmpeg/libav* only encodes/muxes individual files... 

On Thursday, February 24, 2022, Andrea paz via Cin <cin@lists.cinelerra-gg.org> wrote:
I can't determine the version where the problem with the image
sequences starts. Appimage 20210930 already has the problem. Previous
ones don't work for me in Arch, giving a segv and an empty dump file.
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