macOS AVAudioRecorder - ignores duration value

Question

dumbbunny OP

Created Nov ’23

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Cannot record for duration, regardless of the value of 'dur' it always records for about 7 seconds.


  self.recorder!.prepareToRecord()

  let time = self.recorder!.deviceCurrentTime + 0.01

  let dur: TimeInterval = 1.0

  self.recorder!.record(atTime: time, forDuration: dur)

Any help appreciated, thanks. Paul

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Answer 1

dumbbunny OP

Dec ’23

Found it, fixed it.

        recorderDefaults = [AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
                           AVEncoderAudioQualityKey: AVAudioQuality.min.rawValue]

Don't use kAudioFormatMPEG4AAC.

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