Nvidia recently rolled out upscaling in video too with new drivers and latest Chrome/Edge [1]. Honestly, it's pretty decent from my usage. Required a 3080 or above, however.
I've tried the nvidia one and it's really not particularly noticeable. On low resolution media (eg below 720) it really looks like it has removed a lot of the details - mostly as at such a small resolution, there aren't any details haha, but up scaling makes it very noticeable.
1. https://arstechnica.com/gadgets/2023/03/nvidias-new-ai-upsca...