Those "multiframe super resolution techniques" don't get talked about much, though it's been vaguely referenced in news articles and cop dramas where fuzzy CCTV images are mysteriously enhanced to make faces recognisable.
Watching an old episode of 'Cracker' on Britbox recently, I was thinking how great it would be if there was such a thing as a technique to enhance the resolution of old TV recordings. Probably using some sort of multiframe tech with AI. Even getting it from what looks like 360p to a natural looking 1080 would be a major boost.
There seems to have been a lot of recent development so I'm wondering why the likes of Britbox aren't adopting this tech.