Improove Video&Audio Camera Bitrates.
Use MP4 Instead of 3GP for 720p/1080p recordings.
Expand max video capture to 1 hour from 30min restriction.
Improove AAC audio codec Bitrate&Samplerate and expand channels to 2.
- *Test 720p capability in front camera* -

Change-Id: Ia8613192aa2544eb7107018aef7a7f8023d970f5
Tweak brightness values. Add some missing features.