moonlight-stream
spatial audio headphones support
It would be great if spatial audio headphones were supported, now the headphone channels are always stereo.
Theoretically this should be possible by requesting a 5.1 stream and then running it through Apple's spatial audio library. Multichannel streams don't have to be Dolby Audio as can be seen by playing the wave test file here: https://www2.iis.fraunhofer.de/AAC/multichannel.html. The multichannel AAC file should work as well, however as of iOS 17, multichannel AAC files don't work anymore. The iPhone still says 'spatial audio' if you go to control center, but it is played as normal stereo.
What you can already do is using Windows Sonic (free) or Dolby Atmos for headphones (paid) to create a virtual surround signal on the Windows side of your setup. As this is still a stereo signal (on a technical perspective), you can use this on your Airpods as well – just without headtracking, of course.
Some apps (like infuse) have already implemented this. When you request a 5.1 stream, your spatial audio capable headset will give you surround sound.
Would also love to have this. Especially with the Vision Pro around the corner.
Okay, so requesting a 5.1 or 7.1 stream is entirely possible and the Apple TV version of moonlight-ios uses this. However when connecting AirPod to the Apple TV, the stream remains stereo and doesn't even offer upmixing. This probably has to do with Moonlight using the opus library to decode the audio stream? D:
Would be very great feature and it will definitely increase our gaming experience
With iPadOS 18, I believe there is an API for developers to support Spatial Audio. I hope this feature can be implemented.
I have an iPad Pro M4 running iPadOS 18 Public Beta. I could also help to test if needed.
There is a new beta version of Moonlight that supports Spatial Audio and Head tracking for macOS running Apple Silicon. I just tried it with my AirPods Max and it works great! Link to the beta build below
https://ci.appveyor.com/project/cgutman/moonlight-qt/builds/50523331
This should be implementable in moonlight-ios as well. Steam Link actually uses this to supply the iPhone with 5.1 and 7.1 streams that perfectly support headtracking on AirPods.
Got it working. Seems like it doesn't need a recode using CoreAudio – since iOS 18, "AUDIO_CONFIGURATION_71_SURROUND" works perfectly for this. It now just requires a simple UI Switch. Will try to do it this weekend.
Got it working. Seems like it doesn't need a recode using CoreAudio – since iOS 18, "AUDIO_CONFIGURATION_71_SURROUND" works perfectly for this. It now just requires a simple UI Switch. Will try to do it this weekend.
Is this something that would work on the apple tv or you are talking about iphone app?
