How to write audio files on Android, preferably .3gp

Question

I've been researching this for quite a while, and still no joy.

I know that MediaRecorder will read an audio source and write straight to a file, in one of several formats. And I also know that AudioRecord will read an audio source and let you process the raw data, but is there any way to write the data from your app?

For example, I want to read audio, filter it in some simple way, and then write to a .3gp file. Is there any way to do this? Searching for examples, I was only able to find a way to generate .wav files by manually writing the header.

Answer 1

Have you checked out the MediaCodec classes?

http://developer.android.com/reference/android/media/MediaCodec.html