AvAudioRecorder has an init method:
- (instancetype)initWithURL:(NSURL *)url
settings:(NSDictionary *)settings
error:(NSError **)outError
And the "magic" behavior is partially documented :
URL
The location of the file system for recording. Type of file to write - derived from the file extension included in this parameter value.
Is there any additional documentation for this feature? In particular, what are the supported file extensions? And is there a way to support the original output?
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