[incorrecthorse]

I'm not sure information theory deals with this question.

Since this isn't lossless decompression, the point of having no "real" data is already reached. It _is_ inventing things, and the only relevant question is how plausible are the things being invented; in other words, if the video also existed in higher resolution, how close would it actually look like the inferred version. Seems obvious that this metric increases as a function of the amount of information from the source, but I would guess the exact relationship is a very open question.