HDR content from Amazon Prime has been removed on Apple TV 4K

This may or may not work for everyone but I have found that if I go into the Apple TV's Video and Audio settings and set Match Dynamics Range to Off, HDR comes back in the Prime App.

So if I set the ATV video format to 4K Dolby Vision, I get DV in the Prime stream; if I chose the format to be 4K HDR, then the Prime stream is in HDR. If I set the ATV video format to 4K SDR, then I get the Prime stream in SDR.

With Match Dynamics Range to On, no matter what the ATV video format is set at (DV, HDR), I will get a Prime stream in SDR.

Your mileage may vary and of course requires you to be watching viable HDR content of some type but I will obviously be leaving Match Dynamic Range off for now. Quite whether this is Apple or Amazon's issue to fix I don't know.

Finally it was fixed with the latest version 4.2.1 of Amazon Prime 👋

Actually, it’s version 1.2.4 and was released 8/17/2021. I didn’t realize it until I read the current posts here. I had kinda put it out of my mind for the time being.

I guess thanks go to Amazon for fixing it in a relatively short period.

https://www.amazonforum.com/s/question/0D54P00008R7j2gSAB/i-am-not-getting-hdr-on-the-apple-tv-4k-2021-on-prime-video

Someone on the Amazon thread has helpfully explained that turning Match Dynamic Range to Off doesn't resolve it. It just means the ATV forces whatever it is fed into whatever video format (DV or HDR) you have selected. So that's a dead-end given it is SDR originally we seem to be getting. Back to the LG Prime app in the meantime.

As usual Apple will say nothing, admit nothing but the next Apple TV update will miraculously fix it. Something strange is going in over at Disney+ too. Suddenly their Marvel titles are saying HDR10 when they used to say Dolby Vision. Yet when you play the movie Dolby Vision is presented. Weird. But then, all this 4K business is still in flux. Who knows.

The blame game is typical in tech. Point the finger at the other guy when you don’t know what’s going on. Unfortunately Apple plays that game on occasion too. Then the behind the scenes work begins. Engineers form both sides have a conference call, solutions are proposed, handshakes are made. Many times the problem is ignored when it’s just ‘crazy’ users complaining. It would not surprise me to find out Apple engineers called Amazon engineers and said, “Boys, we have a problem.” It probably happens the other way around too.

Just my opinion.

Like one of the other posters there, I stopped getting HDR in the last week or so.