package  {		import flash.display.MovieClip;	import flash.net.NetStream;	import flash.net.NetConnection;	import flash.media.SoundTransform;	import flash.media.Video;	import flash.events.Event;	import flash.events.MouseEvent;	import flash.utils.ByteArray;	import JPGEncoder.JPGEncoder;	import flash.net.FileReference;	import flash.display.BitmapData;	import flash.geom.Rectangle;	import flash.events.AsyncErrorEvent;		public class VideoMain extends MovieClip {		private var netStrem:NetStream;		private var netconnection:NetConnection;		private var soundtransform:SoundTransform;		private var flag:int =1;		private var video:Video;		private var shichang:Number = 0;				public function VideoMain() {			initbar();			init();			getDispatchar();		}		private function initbar():void{			_bar1.scaleX =0;			_bar.scaleX = 0;		}		private function init():void{			//NetStream 类提供了一些方法和属性，它们可用于跟踪文件的加载和播放进度，以及便于用户对回放进行控制（停止或暂停等）。			netconnection = new NetConnection();			//NetConnection 类在 Flash Player 和 Flash Media Server 应用程序之间或者 Flash Player 和运行 Flash Remoting 		    //的应用程序服务器之间创建双向连接			netconnection.connect(null);//传空参数			netStrem = new NetStream(netconnection);			netStrem.play('1.flv');			///			play_stop.buttonMode = true;			stop_btn.buttonMode = true;			jp.buttonMode = true;			bar.bar1.buttonMode = true;						//Video 类在应用程序中显示实时视频或录制视频，而无需在 SWF 文件中嵌入视频。			video =new Video();			video.x = 3;			video.y = 3;			//指定要在应用程序中 Video 对象的边界内显示的视频流。			video.attachNetStream(netStrem);			addChild(video);			var obj:Object= new Object();			//在 Flash Player 接收到正在播放的视频中嵌入的描述性信息时建立侦听器进行响应。			obj.onMetaData = onHandler;			//指定对其调用回调方法以处理流或 FLV 文件数据的对象。			netStrem.client = obj;			//netStrem.addEventListener(AsyncErrorEvent.ASYNC_ERROR, onMeta);//AsyncErrorEvent.ASYNC_ERROR常量定义 asyncError 事件对象的 type 属性值。			soundtransform = new SoundTransform();			addEventListener(Event.ENTER_FRAME,on_barHandler);			addEventListener(Event.ENTER_FRAME,on_bar1eHandler);		}				private function on_barHandler(e:Event):void		{			_bar.scaleX = netStrem.bytesLoaded/netStrem.bytesTotal;			if(_bar.scaleX == 1)			{				removeEventListener(Event.ENTER_FRAME,on_barHandler);			}		}		private function on_bar1eHandler(e:Event):void		{			_bar1.scaleX = netStrem.time / shichang;		}		private function getDispatchar():void{			//在文件中搜索到给定时间，以秒为单位指定，精确到小数点后三位（毫秒）。			netStrem.seek(0);			//暂停或恢复流的回放			netStrem.togglePause();			play_stop.addEventListener(MouseEvent.CLICK,onPlay_stopHandler);			stop_btn.addEventListener(MouseEvent.CLICK,onStop_btnHandler);			jp.addEventListener(MouseEvent.CLICK,onJpHandler);			bar.bar1.addEventListener(MouseEvent.MOUSE_DOWN,onDownHandler);			bar.bar1.addEventListener(MouseEvent.MOUSE_UP,onUpHandler);		}		private function onPlay_stopHandler(e:MouseEvent):void{			netStrem.togglePause();			if(flag == 1)			{				flag = 2;				play_stop.gotoAndStop(flag);			}			else 			{				flag = 1;				play_stop.gotoAndStop(flag);			}		}			private function onHandler(obj:Object):void		{			shichang = obj.duration;//以帧或秒为单位的补间动画的持续时间		}		private function onDownHandler(e:MouseEvent):void{			bar.bar1.startDrag(true, new Rectangle(0, 0, bar.bar2.width, 0));		}		private function onUpHandler(e:MouseEvent):void{			bar.bar1.stopDrag();			if (bar.bar1.x > bar.bar2.width)			{				bar.bar1.x = bar.bar2.width;			}			soundtransform = new SoundTransform();			soundtransform.volume = bar.bar1.x / bar.bar2.width;			netStrem.soundTransform = soundtransform;		}	     private function onStop_btnHandler(e:MouseEvent):void{			flag = 1;			netStrem.pause();			netStrem.seek(0);			play_stop.gotoAndStop(flag);				    }		private function onJpHandler(e:MouseEvent):void{			var bitmapdata:BitmapData = new BitmapData(video.width, video.height);			bitmapdata.draw(video);			var jpgEncode:JPGEncoder = new JPGEncoder();			var bytesArr:ByteArray=ByteArray(jpgEncode.encode(bitmapdata));			var file:FileReference = new FileReference();			file.addEventListener(Event.SELECT, onselect);			file.addEventListener(Event.CANCEL, oncancel);			file.save(bytesArr, "未命名.jpg");		}		private function onselect(e:Event):void{			trace("图片已保存");		}		private function oncancel(e:Event):void{			trace("你取消了保存");		}	}	}