Sorry for the delay, I wasn't paying attention. I am not sure how helpful I can be even now.
The software should not depend on any nvidia libraries explicitly. That makes me think that your ffmpeg installation might be configured to try to use hardware acceleration. Under the covers we depend on ffmpeg to do everything so it must be fully and correctly installed.
I found this article:
https://github.com/Raveler/ffmpeg-cpp/issues/5
It explains that there was (back in 2019) an issue where if ffmpeg thought it might need to encode H.264, it would use an Nvidia hardware encode. It is hard to believe that is still the case, so make sure to update your ffmpeg installation.
That is about all I can suggest.