     override public func endTrackingWithTouch(touch: UITouch?, withEvent event: UIEvent?) {
         
         draggingInProgress = false
-        //print("endTrackingWithTouch")
+
         guard let touch = touch else {
             updateView(currentTime: _currentTime, totalTime: _totalTime)
             return

        let sliderCenterX = leftLabelHolder.frame.width + elapsedTimeViewWidthConstraint.constant + sliderView.bounds.width / 2
        
        let locationX = touch.locationInView(self).x
        //print("beginTrackingWithTouch: \(locationX)")
        
        let beginTracking = locationX > sliderCenterX - DragCaptureDeltaX && locationX < sliderCenterX + DragCaptureDeltaX
        if beginTracking {

            draggingInProgress = true
        }
        
        let newValue = sliderValue(touch)
        
        let seekTime = NSTimeInterval(newValue / availableSliderWidth) * _totalTime
