Отключение звука у проигрываемого видео

    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.*;
    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.media.SoundTransform;
    import flash.net.URLRequest;
    import flash.utils.Timer;
 
 public class SoundTransformExample extends Sprite {
        private var url:String = "vid.mp4";
        private var soundFactory:Sound;
        private var channel:SoundChannel;
        private var positionTimer:Timer;
                private function setVolume(volume:Number):void {
            trace("setVolume: " + volume.toFixed(2));
            var transform:SoundTransform = channel.soundTransform;
            transform.volume = volume;
            channel.soundTransform = transform;
        }
 
var MyVideo:Video = new Video();
addChild(MyVideo);
 
 
MyVideo.height= 537.6;
MyVideo.width= 720.6;
var MyNC:NetConnection = new NetConnection();
MyNC.connect(null);
 
var MyNS:NetStream = new NetStream(MyNC);
MyNS.play("vid.mp4");
 
MyVideo.attachNetStream(MyNS);
 
 
MyNS.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler); 
function asyncErrorHandler(event:AsyncErrorEvent):void 
{ 
}
 
    
 
MyNS.addEventListener(NetStatusEvent.NET_STATUS, goAgain);
function goAgain (event:NetStatusEvent): void {
switch (event.info.code) {
case "NetStream.Play.Stop":
MyNS.seek(0);
break;
}
}