iftee

var scrollSpeed = 30000; // how fast the the page will be scrolled down to bottom in millisecond, change it based on your page height
var offsetTime = 10000; // an delay in in millisecond after which the page will start scrolling, change it based on your time to change window and go full-screen after you turn on recording

function scrollDownForVideoCapture() {
  setTimeout(function() {
    $('html, body').animate({ scrollTop: $(document).height() }, scrollSpeed)
  }, offsetTime);
  return false;
}