Sending metaData with netStream.send is not working

Question

I'm trying to send metaData from client to FMS server when recording Webcam video and have implemented sending of metaData as stated on Adobe's help page at: http://help.adobe.com/en_US/FlashMediaServer/3.5_Deving/WS5b3ccc516d4fbf351e63e3d11a0773d5 6e-7ff6.html
However when I play the recorded video  from FMS, my custom metaData properties trace "undefined". I can trace  default metaData properties such as duration or videocodecid  successfully, but not my custom properties such customProp, width or height. Here is part of my code that is related to the issue:
private function  ncNetStatus(event:NetStatusEvent):void {              
     if  (event.info.code == "NetConnection.Connect.Success") {   
          ns = new NetStream(nc); 
         ns.client = this; 
          ns.publish(webcam_test, "record");   
private function netStatus(event:NetStatusEvent):void {  
     if  (event.info.code == "NetStream.Publish.Start") {  
          sendMetadata();     
private function sendMetadata():void {
      trace("sendMetaData() called...");
     myMetadata = new  Object(); 
     myMetadata.customProp = "Welcome to the Live feed of  YOUR LIFE"; 
     ns.send("@setDataFrame", "onMetaData",  myMetadata);
public function  onMetaData(info:Object):void { 
     trace('videocodecid:  ',info.videocodecid); //returns 2
     trace('customProp:  ',info.customProp); // returns undefined
And here is my trace result:  
NetConnection.Connect.Success
NetStream.Publish.Start
sendMetaData() called...
NetStream.Record.Start
Stopped webcam recording... 
NetStream.Record.Stop
NetStream.Unpublish.Success
NetStream.Play.Reset
NetStream.Play.Start
videocodecid: 2 
customProp: undefined 

Answer 1

Here is the working code which I have tried at my end. You can see the highlighted line in which the second parameter is 0 which means it will play only recorded stream:
package {
    import flash.display.MovieClip;
    import flash.net.NetConnection;
    import flash.events.NetStatusEvent;
    import flash.events.MouseEvent;
    import flash.events.AsyncErrorEvent;
    import flash.net.NetStream;
    import flash.media.Video;
    import flash.media.Camera;
    import flash.media.Microphone;
    import fl.controls.Button;
    import fl.controls.Label;
    import fl.controls.TextArea;
    public class Metadata extends MovieClip {
        private var nc:NetConnection;
        private var ns:NetStream;
        private var nsPlayer:NetStream;
        private var vid:Video;
        private var vidPlayer:Video;
        private var cam:Camera;
        private var mic:Microphone;
        private var clearBtn:Button;
        private var startPlaybackBtn:Button;
        private var outgoingLbl:Label;
        private var incomingLbl:Label;
        private var myMetadata:Object;
        private var outputWindow:TextArea;
        public function Metadata(){
            setupUI();
            nc = new NetConnection();
            nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
            nc.connect("rtmp://localhost/publishlive");
         *  Clear the MetaData associated with the stream
        private function clearHandler(event:MouseEvent):void {
            if (ns){
                trace("Clearing MetaData");
                ns.send("@clearDataFrame", "onMetaData"); 
        private function startHandler(event:MouseEvent):void { 
            displayPlaybackVideo(); 
        private function onNetStatus(event:NetStatusEvent):void { 
            trace(event.target + ": " + event.info.code); 
            switch (event.info.code) 
                case "NetConnection.Connect.Success": 
                    publishCamera(); 
                    displayPublishingVideo(); 
                    break; 
                case "NetStream.Publish.Start": 
                    sendMetadata(); 
                    break; 
        private function asyncErrorHandler(event:AsyncErrorEvent):void { 
            trace(event.text); 
        private function sendMetadata():void { 
            trace("sendMetaData() called") 
            myMetadata = new Object(); 
            myMetadata.customProp = "Welcome to the Live feed of YOUR LIFE, already in progress."; 
            ns.send("@setDataFrame", "onMetaData", myMetadata); 
        private function publishCamera():void { 
            cam = Camera.getCamera(); 
            mic = Microphone.getMicrophone(); 
            ns = new NetStream(nc); 
            ns.client = this; 
            ns.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus); 
            ns.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler); 
            ns.attachCamera(cam); 
            ns.attachAudio(mic); 
            ns.publish("myCamera", "record"); 
        private function displayPublishingVideo():void { 
            vid = new Video(cam.width, cam.height); 
            vid.x = 10; 
            vid.y = 10; 
            vid.attachCamera(cam); 
            addChild(vid);  
        private function displayPlaybackVideo():void { 
            nsPlayer = new NetStream(nc); 
            nsPlayer.client = this; 
            nsPlayer.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus); 
            nsPlayer.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler); 
            nsPlayer.play("myCamera",0); 
            vidPlayer = new Video(cam.width, cam.height); 
            vidPlayer.x = cam.width + 100; 
            vidPlayer.y = 10; 
            vidPlayer.attachNetStream(nsPlayer); 
            addChild(vidPlayer); 
        private function setupUI():void { 
            outputWindow = new TextArea(); 
            outputWindow.move(250, 175); 
            outputWindow.width = 200; 
            outputWindow.height = 50; 
            outgoingLbl = new Label(); 
            incomingLbl = new Label(); 
            outgoingLbl.width = 150; 
            incomingLbl.width = 150; 
            outgoingLbl.text = "Publishing Stream"; 
            incomingLbl.text = "Playback Stream"; 
            outgoingLbl.move(30, 150); 
            incomingLbl.move(300, 150); 
            startPlaybackBtn = new Button(); 
            startPlaybackBtn.width = 150; 
            startPlaybackBtn.move(250, 345) 
            startPlaybackBtn.label = "View Live Event"; 
            startPlaybackBtn.addEventListener(MouseEvent.CLICK, startHandler); 
            clearBtn = new Button(); 
            clearBtn.width = 100; 
            clearBtn.move(135,345); 
            clearBtn.label = "Clear Metadata"; 
            clearBtn.addEventListener(MouseEvent.CLICK, clearHandler); 
            addChild(clearBtn); 
            addChild(outgoingLbl); 
            addChild(incomingLbl); 
            addChild(startPlaybackBtn); 
            addChild(outputWindow); 
        public function onMetaData(info:Object):void { 
            outputWindow.appendText("Custom Prop : " + info.customProp);  
            trace("Custom Prop : " + info.customProp);
            trace("Videocodecid : " + info.videocodecid);
            trace("Creation Date : " + info.creationdate);
Hope this solves your query and if still you have the issue then please tell the version of FMS and Player you are using.
Regards,
Amit