macOS Sequoia Supports HDMI Passthrough for Dolby Atmos Content

In macOS Sequoia, several Apple apps have gained a new HDMI Passthrough feature that enables a Mac to send an unaltered Dolby Atmos audio signal to a connected AV receiver or soundbar.

dolby atmos hdmi passthrough
The new functionality appears in various places in macOS 15, including Apple's TV, Music, and QuickTime Player apps. Apple says turning on the option lets users "Play supported audio in Dolby Atmos and other Dolby Audio formats using HDMI Passthrough when connected to a supported device."

The feature is likely to be welcomed by users who connect their Mac to an external device that supports Dolby Atmos, such as an AV receiver or soundbar. When conected via HDMI cable, the device will be able to decode and output the full immersive Dolby Atmos audio as it was meant to be experienced by the creators, while sending any accompanying video signal to a connected TV.

It's unclear whether this option will be included in tvOS 18, but given that Apple has made it a system-wide feature in ‌macOS Sequoia‌, there is a good chance we will see it come to Apple TVs in a future update. Both ‌macOS Sequoia‌ and tvOS 18 are currently in developer beta, with public betas expected later this month, followed by a general release in the fall.

Related Roundup: macOS Sequoia
Related Forum: macOS Sequoia

Popular Stories

iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Less Than Two Months Away: Everything We Know

Thursday July 25, 2024 5:43 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
Apple Intelligence General Feature

Apple Intelligence Now Available in New iOS 18.1, iPadOS 18.1, and macOS Sequoia Developer Betas

Monday July 29, 2024 10:07 am PDT by
Apple is today providing developers with the first betas of iOS 18.1, iPadOS 18.1, and macOS Sequoia 15.1, with the new software introducing an early version of the Apple Intelligence features. These new betas will be in testing alongside the current iOS 18, iPadOS 18, and macOS Sequoia 15 betas. Developers can choose whether to opt into the new betas with Apple Intelligence, or stay on the ...
Apple Intelligence General Feature

Report: Apple Intelligence Delayed to iOS 18.1 in October

Sunday July 28, 2024 11:52 am PDT by
Apple Intelligence will miss its initial expected launch date to give Apple more time to fix bugs, Bloomberg's Mark Gurman reports. According to individuals with knowledge about Apple's plans, the company now plans to start rolling out Apple Intelligence in software updates by October, arriving several weeks after the launch of iOS 18, iPadOS 18, and macOS Sequoia. This means that Apple...
T Mobile Generic Feature Pink 1

T-Mobile Sued for Breaking Lifetime Price Guarantees

Friday July 26, 2024 2:44 pm PDT by
T-Mobile customers have filed a lawsuit [PDF] against the carrier, alleging that it failed to honor a guarantee not to raise the prices of select cellular plans. The lawsuit, first spotted by Wired, claims that back in 2017, T-Mobile advertised several of its plans with a price lock, but then went on to increase prices starting in May 2024. "T-Mobile ONE customers keep their price until...

Top Rated Comments

Aaargh! Avatar
4 weeks ago

I think the Apple TV supports that already?
Apple TV only supports DD+ with Atmos, and only if you let the OS play the video file. Hopefully this change means proper support for bitstreaming: allowing any application directly send a stream of data to the receiver. That would allow apps like Plex to support Dolby TrueHD+Atmos and DTS:X.
Score: 26 Votes (Like | Disagree)
ric22 Avatar
4 weeks ago
About time. Should have been implemented sooner.
Score: 11 Votes (Like | Disagree)
Axl2023 Avatar
4 weeks ago
We are waiting for bitstream audio in tvOS 18 :)
Score: 11 Votes (Like | Disagree)
Jus711 Avatar
4 weeks ago

Yeah I have no idea what the end of the OP meant when mentioning TvOS. Dolby Atmos and Audio of multiple formats is there has been there a few generations.
Not exactly, it supports lossy Atmos, not lossless HD audio like Dolby TrueHD or DTS HD-MA, it can’t decode those or send the unencoded version for the receiver to decode which is what passthrough would allow.
Score: 10 Votes (Like | Disagree)
urmaster Avatar
4 weeks ago

What sort of Atmos are we talking about here? The streaming kind or the lossless one?
Isn’t that the point of the feature; it’s pass through it doesn't matter what the content is.
Score: 8 Votes (Like | Disagree)
reallynotnick Avatar
4 weeks ago

Yeah I have no idea what the end of the OP meant when mentioning TvOS. Dolby Atmos and Audio of multiple formats is there has been there a few generations.
It’s not passthrough, it’s decoded into LPCM (LPCM+MAT in DD+ Atmos’s case) and sent to the device. And as already pointed out it’s just lossy DD+ not Dolby TrueHD.
Score: 7 Votes (Like | Disagree)