live streaming h.264 not showing video

I'm using FMLE 3.1 to stream live video encoded with H.264 format with  FMS 3 and Flash player 10 + AS 3 to connect to the stream.

When I connect to the stream, just the audio is played. I'm able  even to get the metadata information about the video, but I just receive  the audio.

I already tried some stuff like

1. "Flash 10 won't play live stream H.264 after iTunes install"  http://forums.adobe.com/thread/505620. I tested it in a complete  different environment than mine, but the same result.

2. I've tried some format to play method, but this is just to play  files

ns.play("mp4:saple.f4v");
ns.play("mp4:sample");

3. Also read "How do you watch and record a live h.264" http://www.flashcomguru.co.uk/forum/forum_posts.asp?TID=4649 , but I  don't get even to play the stream at first place.

This is the code I'm using 


import flash.media.Video;

var video:Video = new Video(720, 480);
var ncVideo = new NetConnection();
this.ncVideo.addEventListener(NetStatusEvent.NET_STATUS,  onNetStatus);
this.ncVideo.connect("rtmp://localhost/livecast", "user");

var customClient:Object = new Object();
customClient.onMetaData = metaDataHandler;

function onNetStatus(e:NetStatusEvent) {
     if (e.info.code == "NetConnection.Connect.Success")
            createNetStream();
}

function createNetStream(){
     var ns = new NetStream(this.ncVideo);
     ns.client = customClient;
      ns.addEventListener(NetStatusE vent.NET_STATUS, onNsStatus);
     
     ns.play("livestream", -1);
      this.video.attachNetStream(ns) ;
     this.addChild(video);
}

function onNsStatus(e) {
     trace("onNsStatus " + e.info.code);
}

function metaDataHandler(infoObject:Object):void {
     trace(infoObject.width + " - " + infoObject.height);
}


Another detail is that when I record the video to a file for  instance "sample.f4v", I put this video in the FMS but when I connect to  this stream I receive the "FileStructureInvalid" error message.

I went from changing the extension to .flv http://www.adobe.com/devnet/flashplayer/articles/hd_video_f  lash_player_04.html to the solution to flatten the files http://www.flashcomguru.com/forum/forum_posts.asp?TID=4006 but this is  not the case because I'm using FMS to stream the recorded video.