Why Doesn’t MacBook Pro Support HDR?
According to [Apple support docs](https://support.apple.com/en-us/HT207949), HDR video playback is supported on iPhones, iPad Pro, and Apple TV 4K. In the case of mobile, HDR specifications technically require 700 nits of brightness: this makes the iPhone HDR-capable, but the iPad Pro, which only achieves 600 nits, outputs [what Apple calls EDR](https://www.notebookcheck.net/Apple-fudging-new-iPad-Pro-HDR-capabilities.360376.0.html) (Extended Dynamic Range). Nevertheless, you can still tell you’re getting a wide color gamut in iTunes movie playback on the iPad Pro (as always, my reference is the sandstorm scene in Mad Max: Fury Road).
This being the case, why doesn’t the MacBook Pro play back HDR iTunes movies in this wide color? The screen is a P3 display, and its capable of 600 nits, just like the iPad Pro. The specifications would seem to be there, but you definitely don’t get wide color in these films in iTunes on the MacBook Pro. Why doesn’t Apple support HDR playback?