title: Set brightness/contrast in video capture using Android Camera2
body: <p>I made a video capture app with Camera2 API by following <a href="https://github.com/googlesamples/android-Camera2Video">this</a> guide, </p>
  
  <p>Is there a provision to change brightness/contrast/exposure settings of the video programatically? I'm trying to capture some low-lit video footage, and I wish to increase the exposure.</p>
  
  <p>The documentation <a href="http://developer.android.com/reference/android/hardware/Camera.Parameters.html">here</a> seems to apply only for still pictures.</p>
  
  <p>Any such way for video capture, using <strong>Camera2</strong> API?</p>