Internal Audio Integration

[MurtazaSajawalaHH]

I'm trying to record the internal audio from audio source with video, some queries:

1. How to get the Relevant PCM Data for internal audio ?
2. What should be the size of the float[] pcm array ?
3. How is the Channel Parameter of AudioWriter related to MediaCreator.InitVideoWithAudio ?
4. How to record Audio from Multiple Audio Sources using the AudioWriter?