For some reason I cannot really even begin to comprehend, it appears that most people are completely unable to see if the aspect ratio of a live video (such as a TV show or movie) is incorrect. And I mean even if it's way, way, way incorrect. Like when a 4:3 video is stretched horizontally to fill a 16:9 screen (which means that the video is compressed vertically to 75% of what it ought to be). I don't know if they indeed have a brain malfunction that makes them completely incapable of seeing the problem, or if they just refuse to admit they see it due to some strange psychological phenomenon. In either case they will claim to their graves that the glaringly obvious stretching of the image doesn't bother them at all (again, for a reason that I cannot even begin to comprehend).
I myself am what could perhaps be called hypersensitive to a wrong aspect ratio. If some video footage has even slightly the wrong aspect ratio, I very quickly notice it, and it bothers me.
For example I was recently watching a video and I very quickly noticed that it seemed to have a slightly wrong aspect ratio. I kept watching, and I became more and more convinced of that fact.
It turns out that the video was supposed to have a 16:9 aspect ratio, and while it had 1280 pixels horizontally, rather than being 720 pixels vertically, for some reason it had been squeezed to 668 pixels. That's less than an 8% difference. I still noticed it almost immediately. When I scaled the video vertically to 720 pixels, it immediately started looking correct.
I have yet to meet another person with this kind of "hypersensitivity". Or at least one that admits to seeing it. Much less one who is bothered by it. I don't really get it.