As shown YouTube is catching up with technology. Why; With a significant update to its quality pictures added support video for HDR.
If you don't know what that means, HDR videos are somewhat similar to photos HDR, in the sense that they allow more tones between the brightest and darkest parts of the image.
Of course, the full range of tones of color is missing (the table showing the differences between the different tones of a color) which means you will not be able to see the difference.
So HDR probably won't be fully appreciated by most YouTubers, let alone most of us don't have any TV 4K, let alone one with HDR.
The company also announced that at the moment you will not be able to edit HDR videos uploaded with the Youtube Web editor. For more information about HDR and color gradation, you can see it Google support page.
HDR is coming to Chromecast Ultra today, and "soon" on all Samsung 4K TVs (although the full range of colors and brightness will only appear on those with SUHD panels).
There is currently no mention of the Xiaomi Mi Box or the Nvidia shield, both of which support HDR, although Google says more devices will follow later.
If you have a compatible device, you can try some video samples in the playlist below.
https://www.youtube.com/playlist?list=PLyqf6gJt7KuGArjMwHmgprtDeY8WDa8YX