Oh wow. That's really scary to me... I would feel very violated if a T video taped me without asking me. It's creepy, and it feels invasive. No, I would not agree to that.

But, it sounds like your T asks clients (since you said he knew better than to ask you)? So, it's not hidden... which is better. I still wouldn't agree, personally, but I have issues with privacy and therapy.

Audio recording... I sort of feel the same way. Unless it's for a specific reason, and you're given a chance to consent/opt out, I don't think I'd support it. But, I can see how it could be a useful tool (if you consent).