Android: How to Convert MP4A audio into MP3 or Wav using Java

Android cannot record mp3 audio using the MediaRecorder but it can record mp4a. I开发者_如何转开发'm trying to figure out a way to convert mp4a audio into mp3 on my Android phone. I believe this means FFMPEG is not an option since it needs to be done on the phone. What are my options?

Currently it looks like you are limited to only three choices:

-MPEG4 -AMR -3GPP

It looks like there is an open issue on it for you to track. I gave it a vote for you also. Android only records audio into proprietary AMR format