

I think this libcudnn is a Nvidia CUDA thing. I guess you have checked that the correct CUDA libs are installed and blended has permission and knows where to look for them?
First start for learning blender Python API would be it’s documentation: https://docs.blender.org/api/current/index.html
In general you can skip anything that you can do on the user interface. But video editing is just a very small part of this and if you don’t have any programming experience yet this could be overkill for what you are looking for.
Perhaps someone had the same problems like you before and implemented something. Maybe searching explicitly for blender video editing automation or Python API will give you some results.
I’m pretty sure the individual componentens come from China… But good luck finding any electronic manufacturer that doesn’t use Chinese components. Don’t know what classifies as white labeled for you.