Flash AS3声音视频编程

入门极好视频： http://www.enet.com.cn/eschool/video/flashas3/

《Flash CS3 AS3声音视频高级编程》共分为两章：第一章深入讲解了FLASH对于声音的编程，最后通过一个功能强大的MP3播放器进行演示，通过这一章的学习可以让你对于声音的处理有一个深入的掌握；第二章深入讲解了对于视频的处理，包括如何使用现有视频组件来控制视频。同时还讲了如何创建自己的控制外观。

声音示例：

[AS3.0编程教学]最全的声音控制方法  http://jingyan.baidu.com/article/a948d651bc90a60a2ccd2e4c.html

视频示例： http://www.cuplayer.com/player/PlayerCodeCourse/2012/0914409.html

[Flex]NetStream动态加载视频利用SoundTransform控制音量

 <?xml version="1.0" encoding="utf-8"?>
 <!-- http://blog.flexexamples.com.sixxs.org/2008/03/01/displaying-a-video-in-flex-using-the-netconnection-netstream-and-video-classes/ -->
 <mx:Application xmlns:mx="http://www.adobe.com.sixxs.org/2006/mxml"
                 layout="vertical"
                 verticalAlign="middle"
                 backgroundColor="white"
                 viewSourceURL="srcview/index.html" xmlns:local="*"
                 initialize="init();">

     <mx:Script>
         <![CDATA[
             import mx.controls.Alert;
             private var urlArr:Array=["http://221.122.36.143.sixxs.org/oa/video/1.flv", "http://221.122.36.143/oa/video/2.flv", "http://221.122.36.143/oa/video/p2.mp4"];
             public function init():void{
                 myVideo.urlArr = urlArr;
                 myVideo.total = 100000;
 //              Alert.show("1==>>"+myVideo.urlArr.length);
             }

         ]]>
     </mx:Script>

     <local:mVideo id="myVideo"/>

 </mx:Application>

 第二个文件
 <?xml version="1.0" encoding="utf-8"?>
 <mx:Panel xmlns:mx="http://www.adobe.com.sixxs.org/2006/mxml"
           creationComplete="setTransformVolume();">
     <mx:Script>
         <![CDATA[
             import mx.controls.Alert;
             import mx.events.SliderEvent;

             private var nc:NetConnection;
             private var ns:NetStream;
             private var nc2:NetConnection;
             private var ns2:NetStream;
             private var video:Video;

             [Bindable]
             public var urlArr:Array=null;
             [Bindable]
             public var total:Number=0;

             private var count:int=0;
             private var finished1:int=1; //1：播放正在进行；0：播放结束
             private var finished2:int=0; //1：播放正在进行；0：播放结束

             private var volumeTransform:SoundTransform;


             private function setTransformVolume():void{
                 volumeTransform=new SoundTransform();
                 slider.value = volumeTransform.volume;
                 slider.tickInterval = slider.snapInterval;
                 slider.liveDragging = true;
                 slider.addEventListener(Event.CHANGE, volumeChangeHandler);
                 init();
             }

             private function init():void
             {
                 Alert.show("" + total);

                 var nsClient:Object={};
                 nc=new NetConnection();
                 nc.connect(null);
                 ns=new NetStream(nc);
                 ns.play(urlArr[count]);
                 ns.client=nsClient;
                 ns.soundTransform=volumeTransform;
                 ns.addEventListener(NetStatusEvent.NET_STATUS, myTest1);

                 video=new Video();
                 video.name="video1";
                 video.width=uic.width;
                 video.height=uic.height;
                 video.attachNetStream(ns);
                 if (uic.getChildByName("video1") != null)
                 {
                     uic.removeChild(uic.getChildByName("video1"));
                 }

                 count++;
             }
             private function volumeChangeHandler(event:SliderEvent):void {
                 volumeTransform.volume = slider.value;
                 ns.soundTransform = volumeTransform;
                 ns2.soundTransform = volumeTransform;
             }
             private function init2():void
             {

                 var nsClient:Object={};

                 nc2=new NetConnection();
                 nc2.connect(null);
                 ns2=new NetStream(nc2);
                 ns2.play(urlArr[count]);
                 ns2.client=nsClient;
                 ns2.soundTransform=volumeTransform;
                 ns2.addEventListener(NetStatusEvent.NET_STATUS, myTest2);

                 video=new Video();
                 video.name="video2";
                 video.width=uic.width;
                 video.height=uic.height;
                 video.attachNetStream(ns2);
                 if (uic.getChildByName("video2") != null)
                 {
                     uic.removeChild(uic.getChildByName("video2"));
                 }
                 count++;
             }

             private function myTest1(event:NetStatusEvent):void
             {
                 trace("count1==>>" + count);
                 trace("count1 onStatus:" + event.info.code);
                 if (event.info.code == "NetStream.Buffer.Full")
                 {
                     if (count == 1)
                     {
                         uic.addChild(video);
                         init2();
                     }
                     if (finished2 == 1)
                     {
                         ns.seek(0);
                         ns.pause();
                     }
                 }
                 else if (event.info.code == "NetStream.Play.Stop")
                 {
                     finished1=0;
                     finished2=1;
                     uic.addChild(video);
                     ns2.togglePause();
                     if (count <= urlArr.length)
                     {
                         init();
                     }

                 }

             }

             private function myTest2(event:NetStatusEvent):void
             {
                 trace("count2==>>" + count);
                 trace("count2 onStatus:" + event.info.code);
                 if (event.info.code == "NetStream.Buffer.Full")
                 {
                     if (finished1 == 1)
                     {
                         ns2.seek(0);
                         ns2.pause();
                     }
                 }
                 else if (event.info.code == "NetStream.Play.Stop")
                 {
                     finished2=0;
                     finished1=1;
                     uic.addChild(video);
                     ns.togglePause();
                     if (count <= urlArr.length)
                     {
                         init2();
                     }
                 }

             }

             public function stopVideo():void
             {
                 uic.stop();
             }
         ]]>
     </mx:Script>
     <mx:VideoDisplay id="uic"
                      width="550"
                      height="450"
                      volume="{slider.value}"/>

     <mx:ControlBar>
         <mx:HSlider id="slider"
                     minimum="0.0"
                     maximum="1.0"
                     snapInterval="0.1"
                     tickInterval="0.1"
                     liveDragging="true"/>
         <mx:Button label="Play/Pause"
                    click="uic.play();"/>
         <mx:Button label="Rewind"
                    click="stopVideo();"/>
     </mx:ControlBar>
 </mx:Panel>