captureAudio returns wav fromat. Needed to record in mp3 format

Hii,

Is there a way to capture audio or video in mp3 format.

Ext.device.Capture.captureAudio()

returns in wav format in my iphone. (By the way, I enabled cordova.)

In forums I found this post related with capturing audio in mp3 format:

http://ift.tt/QF9dg5

It uses cordova Media library like:

Code:

    var src = "mysound.mp3";     
    var mediaRec = new Media(src, onSuccess, onError);
      // Record audio     
    mediaRec.startRecord();

Is this the only way to make it in mp3 format?

My main purpose is to make the data smaller before sending to the server.

Best regards,

Emre