How to burn audio to mp3 file using AvAudiorecorder

Question

how to write audio to mp3 file using AvAudiorecorder.im using the following code to configure the recorder

recordSetting1 = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:AVAudioQualityMin],AVEncoderAudioQualityKey, [NSNumber numberWithInt:16], AVEncoderBitRateKey, [NSNumber numberWithInt: 2], AVNumberOfChannelsKey, [NSNumber numberWithFloat:44100.0], AVSampleRateKey,nil]; 

Answer 1

Add

 [NSNumber numberWithInt:kAudioFormatMPEGLayer3] forKey:AVFormatIDKey 

However, it is not possible to encode the mp3 format to the iPhone due to royalties.

Answer 2

While you can play MP3 files using AVAudioPlayer , you cannot record MP3s using AVAudioRecorder (see this SO message and this SO message ). If you need a compressed format, but it does not have to be MP3, I suggest recording in AAC format.