AudioUnitInitialize return -66635

Question

Created Dec ’20

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When I try to initialize audio unit, I'm getting this error, And status code is -66635. I can't find any description for this code. What does it mean?

I have similar problems with both of the following devices
Device Type:iPad7,11 Software Version:iOS 14.1
Device Type:iPad7,5 Software Version:iOS 13.4.1

Please Help!Thank you!

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Answer 1

VintonLiu OP

Jun ’21

Just notice I got the same error today.

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Answer 2

sai_0451 OP

Aug ’21

Calls to AudioUnitInitialize() can fail if called back-to-back on different ADM instances. The error message in this case is -66635 which is undocumented. Tests have shown that calling AudioUnitInitialize a second time, after a short sleep, avoids this issue. See webrtc:5166 for details.

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