Now you can find the same 4K video from few GBs to a hundred GBs, and I am wondering: where to stop? With music there is a similar phenomenon by which after a certain bitrate it becomes an esoteric art to detect improvements. So, what is your “very good enough” bitrate for 4K videos?
Honestly, for me, remux is the only way to go. Why would you risk downgrading the original quality? Is disk space / bandwidth really an issue in 2023?