Amstrad CPC capture OSCC + OBS

[krusty_benediction]

Hi,
I'm trying to capture the output of the Amstrad CPC using OSCC + a standard 4K capture device + OBS

However, I have fucking no idea of how to setup OSB to capture properly the right area at the right resolution. If someone already did it, I'm open to the appropriate configuration setup.
I have not really understand what is part of input configuration, pixel transformation and so on

Thx

[krusty_benediction]

it would seem that the best configuration is the one included