Thread · HN Continuity

I've been wondering about building counter ad technology. I think we recall their being some patents I saw sometime in the last handful of years that talked about swapping items out in a live show during reruns. But like why couldn't we just do that on our side and removing the items I assume we just pipe the HDMI in run some algorithms and then pipe it out. And I know I'm saying it as if it's trivial but if someone can write an algorithm to find existing things and swap them out it's the exact same thing except you just swap them out with a patch of the original scene for the original scene without whatever product placement I suppose.