So, what about all these old videos i shot between 2005 and 2008? Or even some 720p videos that may look a bit crappy today?
I tried a tool to enchance the visual quality and the framerate of this kind of videos: it uses AI to generate images with a better resolution (and it can "create" the missing frames to generate a solid 60 fps video).
From a 320x240 video to 4K (2008):


From a 720p video to 4K (2011):


-> Link to a video sample (4K 60fps)
Her feet look even more smelly now
A test from one of my first real decent candid shoot in 2007, with this girl studying (at ease...) at the campus library:


From a crappy 320x240 video to a nice photo (well ALMOST nice, you can see some artifacts here and there. But first one looks pretty good in my opinon!)
Here's the original video file for comparison (and for FEET).
Let's not forget nylon (from a 720p noisy video):



What do you think? Do you want me to try with some more?
(Here's the software i use, but of course there are more to try, possibly some free ones)