HDR specifies a brightness. Apple is playing HDR videos at the proper brightness when the rest of the OS might be turned down. https://appleinsider.com/article

HDR specifies a brightness. Apple is playing HDR videos at the proper brightness when the rest of the OS might be turned down. https://appleinsider.com/articles/20/08/03/what-hdr-hdr10-and-displayhdr-are-and-what-they-mean-to-apple-users https://appleinsider.com/articles/20/08/03/what-hdr-hdr10-an... That plus P3 gamut means a video playing on a display is closer to what a filmmaker intended. https://en.wikipedia.org/wiki/DCI-P3 https://en.wikipedia.org/wiki/DCI-P3 What's cool is: 1) 4-year old Macs have become HDR laptops and 2) the implementation is subtle- you get full brightness in the HDR video without having the rest of the UI blast to full brightness.