Hello Apple Developers,
I am experiencing an issue where USB audio input (e.g., external USB microphone) is blocked when using AirPlay screen mirroring from my iPhone to a Mac or Apple TV. However, the built-in microphone continues to work without any problem.
Issue Details:
I am using an iPhone 15 (or latest device) running iOS [your iOS version].
I connect a USB audio interface/microphone via a USB-C adapter or Lightning adapter.
The USB microphone works perfectly for audio input before starting AirPlay.
The moment I enable AirPlay screen mirroring, the USB microphone stops working, and it disappears from available audio input sources.
The built-in microphone continues to function, but I cannot use the USB microphone while mirroring.
When I stop screen mirroring, the USB microphone immediately becomes available again.
Expected Behavior:
I would expect iOS to allow me to continue using an external USB microphone while mirroring my screen, just like it allows the built-in microphone to work.
Questions:
Is this an intentional restriction in iOS?
Is there any workaround to enable USB audio input while using AirPlay screen mirroring?
Is there a way to request a feature or configuration option to allow external USB microphones during AirPlay?
I appreciate any insights or guidance from the Apple team or fellow developers. Thanks in advance!
Best regards,
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