is there any chance to record dile to mp3 format?

[mainpart]

I'm trying to record anything other than caf file format and have not succeed yet

TNSrecorder options have a format key that could be android.media.MediaRecorder.OutputFormat.MPEG_4 but i can't find IOS example. THere is TNSrecorder.ios object that handles IOS native AVAudioRecorder. According to docs you can init it with kAudioFormatMPEGLayer3 format parameter but i can't figure out what should i use as url for local file system