Outputting software view to virtual webcam and a few questions

[CaptainLynk]

so I am planning on making a program that is controlled by c#, or python I don't know yet but I would like this program to have a view of what you see when you load up webcam detection. If possible could you output the software view to a virtual camera

also how do you make it so it only detects certain classes

also amazing video I love your content! you are one of the most helpful resources I have found for my projects!!