More audio settings

Could you please add option to choose codec between PCM (uncompressed) and AAC (compressed, like stock iPhone do)?

and option to record a mono or stereo audio while still automatically choose which mic to be used based on active camera (like stock iPhone do)? —rear cam should be using only rear mic for mono and front cam should be using front mic for mono (current version doesn't have option to record a mono track and automatically choose the right mic accordingly)