Netflix Not Outputting Dolby Atmos On Xbox One

Hi

I have the same problem like you. I have an Xbox One X connected through HDMI cable to an Onkyo amplituner 7.1 which is capable to decode Dolby Atmos & DTS X.

I have installed Dolby app on my Xbox to get Dolby atmos sound and the result was that I have on all the games no matter if these are with sound in Dolby Atmos or not only in Dolby Atmos.

Is very strange to get that. I have supposed that when I buy a game with sound in Dolby Digital 5.1 to have Dolby Digital 5.1 and when I buy games in Dolby Atmos to get Dolby Atmos in my amplituner Onkyo.

The same problem I have with all the movies from Netflix. I installed the Netflix app on my Xbox One X and now all the movies I see have sound in Dolby Atmos, even if in the name of the movie on Netflix it is said the sound is recorded only in Dolby Digital
5.1.

What to do in that situation ?......I have tried every settings on my Xbox without any result.......When I put settings on output sound in Xbox everything I played is all in Atmos.

Like you said: "We don't need everything to be upscaled to Atmos, we just want Atmos to work on stuff that is Atmos as it should!"

Thanks in advance for everybody give me every piece of advice

Romeo.

So after following up with the Dolby Access support team, apparently games aren't supported on home theater, only on headphones:

"Unfortunately, Games encoded with Dolby Atmos audio are not compatible with Dolby Atmos for Home Theater, as they are specifically configured for Dolby Atmos for Headphones. If the content you are experiencing is not compatible with the app you are
using, then audio will cease, or will simply output as regular stereo output.

To clarify, Dolby Atmos for Home Theater is included at no charge with any Dolby Atmos supported hardware, such as a receiver or Xbox One X, and is used to activate Dolby Atmos features via HDMI connection for a Dolby Atmos certified AVR, soundbar,
or TV."

"Unfortunately, the version of Dolby Atmos included with your Xbox is Dolby Atmos for Home Theater, which is not compliant with any gaming content."

It kind of strikes me as hard to believe, or that this won't be addressed, but that's what they're saying for now. That said, it still isn't working for me for Netflix content either, so I'm going continue troubleshooting with them and see what's doable
and what's not. Fingers crossed.

I have the same problem on Xbox X and XBox One. I’m using the Denon AVR-X 2700H 7.2 channel Dolby Atmos receiver with the XBox X, and the Yamaha RXV-6A 7.2 channel Dolby Atmos receiver with the Xbox One. Both receivers were working normally outputting Atmos on Netflix until November 2022. Disney+ and Amazon Prime play Atmos content on both devices without issue, hence indicating that the problem is not with the 4K TV and 4K projector, nor receivers.

Since the last update, Dolby Atmos has stopped working and an undefined PCM data stream is being output.
All apps are affected, such as Netflix, Disney, VLC.
Dolby Atmos works with the Xbox sound test program.

Previously, Dolby Atmos had worked without any problems.
All other devices (Blu-ray player, mini PC, FireTV, AndroidTV, etc.) still work perfectly with Atmos on the Denon 4700X.

I can confirm this bug with the Dolby Atmos app.

My setup: Denon X4200W receiver with Xbox One S.

Atmos works fine in the Dolby Atmos app, Blu-Ray and Netflix (the movie Okja is the only Atmos movie on Netflix). All other Netflix videos and Xbox apps default back to 2.0 down mix as posted above.