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Inabsentia
Contributor I
October 24, 2021
Answered

PS5 w 4KUHD disc + Sonos Arc + Sony X900F, but no Atmos

  • October 24, 2021
  • 12 replies
  • 2180 views

I’m trying to get Atmos audio output (lossy, DD+ as it is routing through a normal ARC port) but have only been able to get Dolby Digital 5.1.  Hoping someone can solve the mystery for me.  Here are the particulars:

  • PS5 with 4K UHD disc (Fury, has Atmos audio track selected)
  • PS5 into HDMI #2 (on X900F, ports 2 and 3 are high bandwidth, 3 is also ARC).  Using HDMI cable that came with the Sonos Arc.
  • HDMI #3 (ARC) to Sonos Arc (2 Sonos Ones also connected as surround sound channels).  Using 4K cable - with the built-in Netflix I can get the app to display “Atmos” with this cable so I don’t think that’s the problem.
  • PS5 audio set to Dolby
  • Disc audio (Options menu ...) set to Bitstream

...and still getting just DD 5.1.  No Atmos. 

Any ideas?  I can find any more settings to mess with.

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Best answer by Simmz

Streaming services that support Dolby Atmos don’t use Dolby TrueHD as it’s too bandwidth-heavy, and instead encode Atmos using Dolby Digital Plus, which is encoded at between 384Kbit/s and 768Kbit/s. So, if you watch Netflix or Disney + etc, then you’re still getting a compressed version of Dolby Atmos.

The good news here is that if you have a TV with HDMI ARC that supports Dolby Digital Plus and Dolby Atmos, then you’ll get the same quality from streaming services as on a TV with HDMI eARC.

Things get a bit more complicated when it comes to external devices. Blu-ray and Ultra HD Blu-ray discs only carry Dolby Atmos as part of a Dolby TrueHD soundtrack, which as we know can’t be passed through to the Sonos Arc, as there’s not enough bandwidth. There is a workaround: if your TV supports Dolby Atmos decoding natively, such as LG’s 2018 onwards OLED TVs, then the TV can decode the high-resolution Atmos input and re-encode it as Dolby Digital Plus to send to the Sonos Arc.

You get a slightly compressed version of the sound, but in practice, it’s hard to hear the difference as the change is subtle.

12 replies

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Ken_Griffiths
Ken_Griffiths
December 29, 2021

I just got my PS5 today and i am looking for a solution with Dolby Atmos, After spending all day i found out that in Vudu i can watch all movies in Dolby Atmos no problem but Apple tv and Netflix no solution, so i think it’s something simple, But this is very frustrating. Thank you.

It’s quite likely that the App or subscription level needs updating - for Netflix you need both the App that supports Atmos and a ‘premium’ subscription to their service. If the App supports Atmos you should see the word ‘Atmos’ near to the title of the Movie etc… see screenshot attached (just as an example) from the Netflix App in-built into an LG TV.

GuitarSuperstar
Lead Maestro
December 29, 2021

I just got my PS5 today and i am looking for a solution with Dolby Atmos, After spending all day i found out that in Vudu i can watch all movies in Dolby Atmos no problem but Apple tv and Netflix no solution, so i think it’s something simple, But this is very frustrating. Thank you.

The PS5 doesn’t support Dolby Atmos audio on Netflix or Apple TV+.

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