[skimpycompiler]

Not really. Upscaling is hardware, not some ridiculously slow software solution.

https://community.sony.co.uk/t5/blog-news-from-sony/inside-4...

Upscaling is a very state of the art technology, not some layman's solution.

There are firms that specifically targeted upscaling as their product and made millions with their state-of-the-art tech. Currently upscaling is in the rise again with 4K TVs. Back in the days they made some incredible chip solutions, sold them expensively to Sony, Samsung and similar. Sony realized they can, with all of their resources (super-HD movie database) make incredible upscalers.

Just imagine that Sony has stored whole movie The Walk (distributed by Sony Pictures) in your TV in 4K resolution, the moment this movie is displayed on your screen through some lower resolution sources, they find it in the database and display the 4K content. Of course, that's highly inneficient and memory intensive, thus, they use statistical models to efficiently store movie material and have fast chips to quickly approximate the real upscale.

This will then, if the sample (number of movies) is high enough, work well on all of the movie content.