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Asked: 2026-06-02T16:25:27+00:00

How to record audio as an mp3 file by using AvAudiorecorder? I am using

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How to record audio as an mp3 file by using AvAudiorecorder?
I am using the following code for the recorder setting

recordSetting =  [NSDictionary dictionaryWithObjectsAndKeys:
                  [NSNumber numberWithInt:AVAudioQualityMin],AVEncoderAudioQualityKey,
                  [NSNumber numberWithInt:16], 
                   AVEncoderBitRateKey,
                   [NSNumber numberWithInt: 2], 
                   AVNumberOfChannelsKey,
                   [NSNumber numberWithFloat:44100.0], 
                   AVSampleRateKey, nil];
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1 Answer

  1. Editorial Team

    Add

    [NSNumber numberWithInt:kAudioFormatMPEGLayer3] forKey:AVFormatIDKey

    However it’s impossible to encode mp3 format at IPhone because of royalty.

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