Video not showing using netstream(bytes) - actionscript-3

Question

im working on video streaming i have a php api that return the video and then play it using byte array,but video is not showing, but when i look at the trace is hows the downloaded bytes and bytesloaded.Can you give me idea what i'm doing wrong i'm new in actionscript.
import flash.display.Sprite;
import flash.events.NetStatusEvent;
import flash.events.ProgressEvent;
import flash.media.Video;
import flash.net.NetConnection;
import flash.net.NetStream;
import flash.net.NetStreamAppendBytesAction;
import flash.net.URLRequest;
import flash.net.URLStream;
import flash.utils.ByteArray;
var video:Video;
var video_nc:NetConnection;
var video_ns:NetStream;
var video_stream:URLStream;
video_nc = new NetConnection();
video_nc.connect(null);
video_ns = new NetStream(video_nc);
video_ns.client = this;
video_ns.addEventListener(NetStatusEvent.NET_STATUS, ns_statusHandler);
video = new Video(1280, 720);
video.attachNetStream(video_ns);
video.smoothing = true;
video_ns.play(null);
video_ns.appendBytesAction(NetStreamAppendBytesAction.RESET_BEGIN);
video_stream = new URLStream();
video_stream.addEventListener(ProgressEvent.PROGRESS, videoStream_progressHandler);
video_stream.load(new URLRequest("https://www.xxxx.com/test.php"));
addChild(video);
function ns_statusHandler(event:NetStatusEvent):void
{
trace(event.info.code);
trace("zzz");
}
function videoStream_progressHandler(event:ProgressEvent):void
{
trace(event.bytesLoaded);
var bytes:ByteArray = new ByteArray();
video_stream.readBytes(bytes);
video_ns.appendBytes(bytes);
//trace(bytes);
}