Safari not able to reproduce 8k video from youtube I'm trying to see the new 8k videos on Youtube with Safari but when I choose the 8k quality I get an error: an error occured, please try again later.

An example of video: https://www.youtube.com/watch?v=ChOhcHD8fBA&amp;t

When I choose 4k works fine. 

I'm using a Macbook Pro 15" with touchbar with Radeon Pro 460.

Any idea why this is happening? someone is able to see the video?
With Chrome you can play it. It looks like Safari is not compatible with 8k.