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iphonerecordavaudiorecorder

How to record audio as mp3 file by using AvAudiorecorder in iOS

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];
Solution

  • Add

    [NSNumber numberWithInt:kAudioFormatMPEGLayer3] forKey:AVFormatIDKey

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