使用NetConnection、NetStream和Video类来显示FLV

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怎么在Flex应用程序中使用NetConnection、NetStream和Video类来播放flv文件？怎么使用onMetaData和onCuePoint事件来处理视频的元数据和嵌入提示点。代码如下：

<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"    xmlns:s="library://ns.adobe.com/flex/spark"    xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"   creationComplete="init()" ><fx:Script><![CDATA[import mx.events.FlexEvent;import mx.utils.ObjectUtil;private var nc:NetConnection;private var ns:NetStream;private var video:Video;private var meta:Object;protected function init():void{// TODO Auto-generated method stubvar nsClient:Object = new Object();nsClient.onMetaData = ns_onMetaData;nsClient.onCuePoint = ns_onCuePoint;nc = new NetConnection();nc.connect(null);ns = new NetStream(nc);ns.play("http://192.168.0.50:81/TestRSL/avatar.flv");ns.client = nsClient;video = new Video();video.attachNetStream(ns);uic.addChild(video);}private function ns_onMetaData(item:Object):void{trace("meta");meta = item;video.width = item.width;video.height = item.height;uic.width = video.width;uic.height = video.height;panel.title = "frame rate:" + item.framerate;panel.visible = true;trace(ObjectUtil.toString(item));}private function ns_onCuePoint(item:Object):void{trace("cue");}]]></fx:Script><fx:Declarations><!-- Place non-visual elements (e.g., services, value objects) here --></fx:Declarations><s:Panel id="panel" visible="true"  width="376" height="374"><mx:UIComponent id="uic" /><s:controlBarContent><s:Button label="Play/Pause" click="ns.togglePause()" /><s:Button label="Rewind" click="ns.seek(0); ns.pause();" /></s:controlBarContent></s:Panel></s:Application>

很好的blog地址：http://blog.flexexamples.com/