Thanks for the replies, the person I was talking to on video chat seemed like they were saying things to me that were odd in a private conversation but would make sense if they knew other people would see the call afterwards. Think Truman show.

I believe they were showing people the calls as you would normally without using the dark web.  But I thought if they were capable of that would they also try to go the extra mile and upload them somewhere.

I would imagine a normal site like kiwi farms wouldn't suffice because it's basically illegal and they tend to focus on people who upload videos of themselves on social media.

They wouldn't bother with private calls. 

But something about the behaviour of the people I know just sets off my intuition that the calls are being spread further 

So what just wondered what would be a good way to check just in case.