AudioUnitInitialize return -66635

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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qianzi
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  • Just notice I got the same error today.

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    VintonLiu
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 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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sai_0451
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