title: Sending video data while recording using AVCaptureSession
body: <p>Hai I am creating an iOS application for video streaming.
  I never tried AVCaptureSession.
  I want to send the video+audio data while recording, is it possible ? If so please help me to do that.</p>
  
  <p>Or is there any way to get video data in some time interval (say 10sec), without breaking recording will I get recorded video data in every 10 seconds ?</p>