Failed to record audio on iOS

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1

Godot Version

4.5.1

Question

I exported the audio mic record demo( godot-demo-projects/audio/mic_record at master · godotengine/godot-demo-projects · GitHub ) to my iphone with iOS 18.6.2. And error message was printed in Xcode as the app was openned:

AURemoteIO.cpp:1666  AUIOClient_StartIO failed (561145187)

drivers/coreaudio/audio_driver_coreaudio.mm:522:input_start(): AudioOutputUnitStart failed, code: 561145187 AudioOutputUnitStart failed, code: 561145187

No sound was recorded. When I tried to save the audio file, it only saved a file without any sound, but it had correct duration.

2

When you exported it, did you enable the Microphone access flag? Without it iOS automatically blocks all attempts without even asking the user.

3

Thanks for your reply. I have enabled “Audio > Driver > Enable Input“ flag, and I can’t see any settings about “Microphone access flag” in iOS exporting options. When I opened the app at the first time, it asked me for the microphone permission and I accepted it, but it still printed the errors and I couldn’t record any sound.

4

That would beAVAudioSession.ErrorCode.cannotStartRecordingwhich is described as “This error type usually occurs when an app starts a mixable recording from the background and it isn’t configured as an Inter-App Audio app.”

Which implies it has permission but is getting tripped up somehow.