I think the loving thing to do is accept that. He doesn't want to talk to you. You don't have to accept being filmed. He's probably going through some seismic stuff in his head with his birth mother and you have to give him space. Divorces and house sales take time and right now he's panicking. Just move away from him and take care of yourself.
What things have you said that might have triggered his wish to film you? Did you act in a threatening way? Could he be trying to protect himself or gather evidence for a divorce? I don't know where you are, but in the UK there are laws about coercive control which would deal with this kind of thing.
