NsExample.as 10 keep aspect ratio. stretch to frame

package
{
    import flash.accessibility.Accessibility;
    import flash.display.Sprite;
    import flash.events.*;
    import flash.net.NetConnection;
    import flash.net.NetStream;
    import flash.media.Video;

    public class NsExample extends Sprite
    {
        private var nc:NetConnection;
        private var ns:NetStream;
        private var video:Video;

        public function NsExample()
        {
            video = new Video();
            addChild(video);

            nc = new NetConnection();
            nc.client=this;
            nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
            nc.addEventListener(AsyncErrorEvent.ASYNC_ERROR, onError);
            nc.connect('rtmp://live.7cast.net/live');
        }

        private function startStreaming()
        {
            ns = new NetStream(nc);
            ns.client = this;
            ns.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
            ns.addEventListener(AsyncErrorEvent.ASYNC_ERROR, onError);
            ns.play("ovaxh37k9yep18z");
            video.attachNetStream(ns);
        }

        private function onNetStatus(event:NetStatusEvent):void
        {
            switch(event.info.code)
            {
                case 'NetConnection.Connect.Success':
                trace('NetConnection.Connect.Success');
                startStreaming();
                break;

                default:
                trace(event.info.code);
            }
        }
        private function onError(event:AsyncErrorEvent):void
        {
            trace(event);
        }
        public function onMetaData(data)
        {
            var ar = data.height / data.width;
            video.width = stage.stageWidth;
            video.height = video.width * ar;
            video.x = (stage.stageWidth - video.width)/2;
            video.y = (stage.stageHeight - video.height)/2;
        }
        public function onBWDone ()
        {
            trace("on Bandwidth Done ");
        }
    }
}

output

NetConnection.Connect.Success
NetStream.Play.Reset
NetStream.Play.Start


note

apparently works.
but less information in output? is this bad?