The problem is punishing the uploader doesn't remove the upload. Once the public has it, it has it forever. It doesn't un-contaminate a jury pool, and there's no later retraction if whatever that was uploaded is found to be lacking context, false, or outright fabricated. Once that kind of damage is done, it can't be un-done.

>It's already impossible to stop someone from recording if they are really determined.

I'm no expert, but I believe national security SCIFs use technology that blocks recording.

> You enforce the restriction by prosecuting people who upload the footage.

but this is impossible to guarantee as well