I don't know if it's reassuring at all OP, but I just wanted to say that if I ever heard gossip about a man and a woman having consenting video sex, only for the man to screen-record it and share it amongst his friends, the only person I would look down on in that scenario is the man for his sleazy behaviour. Cam sex is legal, it's fine, people do it - unconsented recording and sharing of said videos is not fine and it isn't legal.
I'm not minimising your situation - I understand how mortified you must be, and what a desperate situation you must feel in, however please remember that, even if they don't say it, anyone who is shown the video will likely raise an eyebrow at the man sharing it if they are a decent human being.
I wouldn't judge someone for having cam sex, nor would I want to see the video, and I believe a lot of people are in the same boat as me.
People enjoy gossip for the 1 or 2 days it lasts, but it will soon die out and fade, people will forget, time will move on, new things will happen that they will gossip about instead. You have not committed a crime, you have not hurt anyone, you are not a bad person and you have not ruined anyone's lives.
If you want to contact the police you are within your rights to do so, I will understand however if this is not something you feel you can do.
You CAN leave your husband, move to another town, start a fresh in somewhere that people don't know you. You are free to deal with this however you think is best.
Some people might recommend you try and "own" it. If it's mentioned to you, brush it off with "yeah I did, and?". The lack of embarassment and the "owning" of your actions takes the wind out of the sails of anyone who might be trying to get some more gossip from the situation. When I was much younger, a "friend" took a photograph of me as I was getting changed and she shared it to a group chat. I was asked about it in the way of "omg you must be mortified!" by other smirking "friends", but I flattened their enjoyment by saying "no, I think I look good haha, just wish I had time to put my frilly knickers on rather than those granny pants". It was soon forgotten about, as the gossip became less "gossipy" once they didn't get a reaction from me.
I hope you find a way to deal with this that suits you OP, thinking of you <3