since I have an sd card with the manjaro-ppp version installed, updated my mobian sd card with apt update, so now
uname -a shows
Linux mobian 5.19-rockchip #1 SMP PREEMPT_DYNAMIC Sat Oct 15 15:03:36 UTC 2022 aarch64 GNU/Linux
and copied the megapixels binary, and config from the manjaro phosh, and it is working.
todo: find a debian version of megapixels; the default one did not seem to find the camera properly, and gave errors when using the copied ini file.