Dolby atmos pcm

I have had the same issue with Netflix and Apple TV (a few months), no Dolby Atmos, although there is a label Dolby Atmos at the title and chosen track with Dolby Atmos in the application. My AVR shows a PCM input signal for this application.

My setup is: Xbox Series X - Denon AVR X3700H - TV Samsung 75Q80T

This is Xbox One specific, and relates to how Dolby Atmos capabilities via Home Cinema amps. They have been compromised by the fact that the Dolby Atmos app version has not kept up with the firmware of numerous current amps from multiple brands.

Since August, it changed from outputting Atmos signals as "Atmos" to to generic "multi Ch in".

Like many others, I mailed Denon, and it is an issue relating to the MAT container embedded in the Dolby Atmos app. We collectively need a definitive answer on when Microsoft and/or Dolby intends to upgrade to 1.6?

The full quite of the Denon explanation is below:

"Dolby Atmos version is changed from “Dolby Harmony 1.3” to “Dolby Home Audio 1.6” via U21 Update. The Dolby Home Audio 1.6 includes the “Dolby MAT signaling” feature that detecting the channel based PCM signal contained into the Dolby MAT Container.
And, major player which contains the PCM signal into Dolby MAT container is only XBOX One S and XBOX One X, currently. With new Dolby Atmos version 1.6, specific processing of source (XBOX) is needed. This is now the problem: Xbox did not implement this processing
yet:"

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 have the same issue since the latest alpha update that was released October 27th. Before I had bitstream out and dolby Atmos. Now only 7.1 PCM.

But my blu rays are working with dolby Atmos. I hope this get patched with the next update.

Issue has been reported multiple times by many people as indicated in this and few other threads (reddit, xbox forums, etc). I myself have opened several tickets (currently have one ongoing now) on the issue and yet it still hasn't been resolved. I have also created help tickets with Dolby Access Support, and their responses continue to be that it is a Microsoft issue in how it is outputting Dolby Atmos. Summary of my issues is below:

- Bitstream audio out no longer an option in the HDMI output settings. In the November 2021 update on the Xbox Series X, the audio settings page was changed and unfortunately the option to output bitstream audio was removed. Despite the many issues this has caused, Microsoft still has not fixed the issue. Please bring back the bitstream/lossless output formats instead of forcing PCM only.

- Despite Dolby Atmos being selected as shown in the picture, the Xbox is outputting PCM 'multichannel audio' instead of Atmos (receiver display shown in lower portion of picture). This appears to be causing delays/hiccups in the HDMI handshake process as whatever PCM signal is being sent is not fully correct and the receiver bounces between seeing multichannel audio and dolby atmos until finally settling on multichannel audio. To my earlier comment, being able to pass true bitstream dolby atmos audio to the receiver should eliminate this issue.

- I have the Xbox Series X running to the AVR and then to the TV in order to have access to all the audio formats. When I tried to run the Xbox directly to the TV and then audio over eArc to the receiver, the Xbox will only output PCM Stereo, Dolby Digital or Dolby Atmos. I have tested the TV/receiver and they are able to pass other formats (such as DTS:X) over eArc so it is an Xbox issue of not allowing all the formats to be output (possibly related to bistream vs PCM also?).