video record

import flash.events.Event;

var nc:NetConnection;
var ns:NetStream;
var nsPlayer:NetStream;
var vid:Video;
var vidPlayer:Video;
var cam:Camera;
var mic:Microphone;
nc = new NetConnection();
nc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatus);
nc.connect("rtmp://localhost/publishlive");

function onNetStatus(event:NetStatusEvent):void{
    trace(event.info.code);
    if(event.info.code == "NetConnection.Connect.Success"){

   }
} 

function publishCamera(e:Event) {
    cam = Camera.getCamera();
    mic = Microphone.getMicrophone();
    ns = new NetStream(nc);
    ns.attachCamera(cam);
    ns.attachAudio(mic);
    ns.publish("myCameraa","record")
    displayPublishingVideo();
}

function displayPublishingVideo() {
    vid = new Video();
    vid.x = 10;
    vid.y = 10;
    vid.attachCamera(cam);
    addChild(vid); 
}

function displayPlaybackVideo(e:Event){
    nsPlayer = new NetStream(nc);
    nsPlayer.play("myCameraa",0,-1);
    vidPlayer = new Video();
    vidPlayer.x = cam.width + 20;
    vidPlayer.y = 10;
    vidPlayer.attachNetStream(nsPlayer);
    addChild(vidPlayer);
}

function stopCamera(e:Event)
{
    ns.publish(false);
}
stop_btn.addEventListener(MouseEvent.CLICK , stopCamera);
record_btn.addEventListener(MouseEvent.CLICK , publishCamera);
play_btn.addEventListener(MouseEvent.CLICK , displayPlaybackVideo);

When i click on the record_btn i get error message like this

NetConnection.Connect.Success
Error #2044: Unhandled NetStatusEvent:. level=error, code=NetStream.Record.NoAccess
    at videorecord_fla::MainTimeline/publishCamera()
NetConnection.Connect.Closed

Thanks,

Shanthi