I agree. Each frame is new information causing new quantisation decisions. Especially if there is a limited pool of potential people and you can get good photog

I agree. Each frame is new information causing new quantisation decisions. Especially if there is a limited pool of potential people and you can get good photographs of them from various angles (which these days is virtually everyone if you have an agency budget), and you can estimate the head position from torso movement, then try out and see which match the best. TV programs love blurred faces and voices, and they should really use a stand-in for the actual person for interview shots. I doubt the US TLAs have it, because the software they have is often rubbish generated by a cartel of low skill providers, and frequently 10 years behind the times. But I bet the Chinese Ministry of State Security has it. So so many dissidents to keep track of, to identify after they have moved overseas and apply pressure to.