Sonos 12.0.5 Update: Delivers Dolby Atmos to Arc with AppleTV

I am getting Dolby Atmos through the LG TV AppleTV app as well as the Apple TV 4K. Random Atmos-enabled shows. My LG TV is connected to the Sonos Arc via eARC.

Which LG do you have?

I have the LG 65GX OLED.

I can’t answer your question to the extent you are asking.

Below are audio formats the The King of Staten Island is recorded in:

If you view the ATV screen shot in my previous post you’ll see that when the ATV audio format is set to Dolby Atmos the audio is decoded and sent as uncompressed multi-channel LPCM. My research suggests that AppleTV may be using Dolby Digital Plus to carry LPCM as metadata. 

All that changes nothing as B4 12.0.5 my Arc would not recognize Dolby Atmos audio sent by ATV and would force me to set ATV audio to Dolby Digital 5.1.  Now since 12.0.5 my Arc recognizes ATV Dolby Atmos. I’ve made no adjustments to my TV audio settings or connections.

Bottom-line how Dolby Atmos gets to the Arc (speaking for myself) is inconsequential just as long as my $800 Arc will allow me to enjoy ATV or any of the popular streaming services that offer Dolby Atmos. BTW my NetFlix Premium has no issues with the Arc to enjoy Dolby Atmos.

@AjTrek1 , your TV has an eARC connection. All that’s happened is that you’ve now passed Atmos as multichannel LPCM (*not* Dolby Digital Plus) over eARC to Sonos Arc. This was possible on day one. 

I did the upgrade and my sound has not dropped at all on anything played. I had issues with the Arc dropping the audio.  Yes I get Dolby atmos. 

Perhaps I wasn’t as clear in my wording as I should have been.

What application are you using to play this movie, that has been encoded in all these formats? Is it an Apple Movie, or a movie being played by a streaming applications such as Netflix, Amazon Video, or other non-Apple streaming application?

@oriboaz 

You need to re-read my comment. I know what I’ve done. 

I’m using my ATV 4K box via its native app iTunes Movies. I’m don’t use it to steam via other apps like NetFlix etc.

All I am saying that nothing in 12.0.5 has changed Atmos support.