How is this done? Are we going to live in a world of catfishing?

How is this possible? I am also guessing that this would have to be recorded and processed rather than through a live webcam? Edit: - I am getting a few comments saying that I am indirectly trying to find out how to grift, which if I wanted to, I could ask ChatGPT on a step-by-step set-up instead of asking on Reddit. Anyhow, I don't have the hardware set-up for it. - Personally, I was curious if this could be done through a live webcam because in today's context, catfishing can still be discovered if the victim asks for a video call and the filters are obvious.