Tutorial:How to Smooth resized video in VideoDisplay component Flex.
Technology: Adobe AIR, Flash Builder, Adobe Flex, Actionscript 3.0.
Description: If VideoDisplay component is resized or scaled video gets pixelated and also looks rough and untidy. The basic video component inside the VideoDisplay component contains a smoothing property since flash player six which is not exposed publicly in this VideoDisplay component.

Content: Solution to this problem is quite simple . Here we are extending the VideoDisplay component and exposing the smoothing and deblocking property publicly. Deblocking property is used to to enable / disable deblocking filter. Deblocking filter can remove the blocks or artifacts that appear in the video due to excessive compression.

Create a Actionscript 3.0 class and paste the following code.

package
{
	import flash.display.DisplayObject;
	import mx.controls.VideoDisplay;
	import mx.controls.videoClasses.VideoPlayer;
	
	public class SmoothVideoDisplayCom extends VideoDisplay
	{
		// Public property exposed. Set this property to true to enable smoothing 
		public var smoothing:Boolean=false;

		// Set default value for deblocking filter.
		// 0 - automatically enable / disable deblocking filter as per required (recommended)
		// 1 - disable deblocking
		// 2 - enable deblocking
		
		public var deblocking:int=0;
		public function SmoothVideoDisplayCom()
		{
			super();
		}
		override public function addChild(child:DisplayObject):DisplayObject
		{
			// set the value to the video component inside VideoDisplay component
			var video:VideoPlayer = VideoPlayer(child);
			video.smoothing=smoothing;
			video.deblocking=deblocking;
			return super.addChild(child);
		}
	}
}
//The above class can be used in  mxml like this 
<local:SmoothVideoDisplayCom id="localVideoDisplay" width="320" height="240"  x="21" y="0"/>