[ttt480]

undefined, все поправил как вы сказали.
Объект container - заменил на объект myVideo.

Но теперь окно находится не на середине (а с краю), и не подгоняется под свои пропорции.

import flash.media.SoundTransform;
 
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
 
function update(e:Event = null):void {
	myVideo.scaleX = myVideo.scaleY = 1;
	var scale:Number=Math.min(stage.stageWidth /myVideo.width,stage.stageHeight/myVideo.height);
	myVideo.scaleX = myVideo.scaleY = scale;
	myVideo.x = stage.stageWidth * 0.5 - myVideo.width * 0.5;
	myVideo.y = stage.stageHeight* 0.5 - myVideo.height * 0.5;
}
 
var myVideo:Video = new Video();
	myVideo.height = 537.6;
	myVideo.width = 720.6;
	addChild(myVideo);
 
var netConnection:NetConnection = new NetConnection();
	netConnection.connect(null);
 
var myStream:NetStream = new NetStream(netConnection);
	myStream.play("video/1.mp4");
 
myStream.soundTransform = new SoundTransform(0);
 
 
myStream.addEventListener(AsyncErrorEvent.ASYNC_ERROR, function (event:AsyncErrorEvent):void {}); 
myStream.addEventListener(NetStatusEvent.NET_STATUS, goAgain);
 
myVideo.attachNetStream(myStream);
 
function goAgain (event:NetStatusEvent): void 
{
if(event.info.code == "NetStream.Play.Start")
	        myStream.seek(20);
 
if(event.info.code == "NetStream.Play.Stop") 
			myStream.seek(0);
}