4K TVs are commonplace, 4K streaming is within reach for many broadband users, and 4K Blu-rays are still sought after by film geeks. The problem is most content is not in 4K, and many studios are turning to AI upscaling technology to convert content to 4K, with (to put it mildly) very mixed results.
Source : 4K Blu-Rays Have an AI Upscaling Problem: Buyer Beware
