As you have discovered, AirPlay of audio doesn’t support more than stereo. AirPlay of a media file itself (which is what QTPlayer and iTunes do) does in a way support this, since the URL of the file to be played is simply sent to the ATV, which then plays it. If you use AVPlayerView (in AVKit), like QTPlayer does, you will get this feature as well. But I fear you aren’t just playing files.
Greg > On May 11, 2017, at 4:45 AM, Fokke de Jong <fokkedej...@gmail.com> wrote: > > Hi, > > We are developing an app to stream custom 5.1 (or higher order multichannel) > audio from iOS via AirPlay to an AppleTV. Streaming 5.1 content using the > built-in movie player works fine, but using AVAudioSession we never get the > option to select the multi-channel output ports; the device only advertises: > > <AVAudioSessionPortDescription: 0x17401aa20, type = AirPlay; name = Apple TV; > UID = 58:55:CA:3E:DC:CD-airplay; selectedDataSource = (null)> > <AVAudioSessionChannelDescription: 0x17001d8d0, name = Apple TV 1; > label = 0 (0x0); number = 1; port UID = 58:55:CA:3E:DC:CD-airplay> > <AVAudioSessionChannelDescription: 0x17001d8f0, name = Apple TV 2; > label = 0 (0x0); number = 2; port UID = 58:55:CA:3E:DC:CD-airplay> > > [AVAudioSession sharedInstance].maximumOutputNumberOfChannels return 2, even > when we instantiate an AURemoteIO object with 6 output channels. > > Is there a trick to get the AppleTV to show its 6 (or 8) channels via AirPlay? > > Thanks. > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Coreaudio-api mailing list (Coreaudio-api@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/coreaudio-api/gregc%40apple.com > > This email sent to gr...@apple.com
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