• flex4+fms3.5+cs4开发实时音视频直播及点播详解


    开发工具及环境:

    1)flash builder4

    2)flash cs4

    3)flash media server3.5

    fms部分

    fms是adobe的流媒体服务器,不过是收费的,价格大概是oracle的一半,不过还是觉得挺贵的。adobe提供控制连接数的开发人员版,除了这点具体和完全版一样。服务器的配置网上很多,大家一搜就一大把。

    其中关键的是:

    由于需求是不仅要提供直播,而且还能点播历史音视频。而as的NetStream的publish方法提供的录制功能是将录制的视频放在直播的同一个文件夹下,所以要需要改一下fms配置。

    1)fms的dvr默认是关闭的,需要修改C:/Program Files/Adobe/Flash Media Server 3.5/applications/live/main.far里的Application.xml,将文件中的
    <StreamManager>
    <StreamRecord override="no">false</StreamRecord>
    </StreamManager>

    改为
    <StreamManager>
    <StreamRecord override="yes">true</StreamRecord>
    </StreamManager>

    修改后重新加入main.far中

    2)fms默认是将直播与点播文件目录分开的(live和vod),但是视频录制是在live文件加下,所以我们要修改点播目录

    C:/Program Files/Adobe/Flash Media Server 3.5/conf/fms.ini文件中将
    VOD_DIR 设置为 C:/Program Files/Adobe/Flash Media Server 3.5/applications/live
    这样就可以实现直播点播同文件夹共存了

    3)配置虚拟目录

    打开C:/Program Files/Adobe/Flash Media Server 3.5/applications/live/Application.xml在<VirtualDirectory>中加入
    <Streams>/;${VOD_COMMON_DIR}</Streams>
    <Streams>/;${VOD_DIR}</Streams>

    补充:如果在flex中直播视频时抛出noAccess错误,请在服务器上给录制机分配写入的权限。
    通过以上配置fms就完成了

    flex部分

    <?xml version="1.0" encoding="utf-8"?> 
    <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"   
                           xmlns:s="library://ns.adobe.com/flex/spark"   
                           xmlns:mx="library://ns.adobe.com/flex/mx" width="430" height="340"   
                           creationComplete="init_creationCompleteHandler(event)"   
                           closing="unonload()"> 
        <s:layout> 
            <s:BasicLayout/> 
        </s:layout> 
        <fx:Style source="media.css"/> 
     
        <fx:Script> 
            <!--[CDATA[  
                import flash.events.NetStatusEvent;  
                import flash.net.NetConnection;  
                import flash.net.NetStream;  
                  
                import mx.collections.ArrayCollection;  
                import mx.controls.Alert;  
                import mx.controls.Text;  
                import mx.events.FlexEvent;  
                  
                private var nc:NetConnection;     
                private var ns:NetStream;     
                private var vi:Video;  
                private var cam:Camera;     
                private var microphone:Microphone;  
                private var fmsArr:ArrayCollection=new ArrayCollection([]);  
                private var sharedObject:SharedObject=SharedObject.getLocal("com.ue");   
                  
                /**  
                 * 初始化  
                 */  
                protected function init_creationCompleteHandler(event:FlexEvent):void{  
                    var loader:URLLoader = new URLLoader();  
                    loader.dataFormat=URLLoaderDataFormat.VARIABLES;  
                    loader.addEventListener(Event.COMPLETE, loader_complete);  
                    loader.load(new URLRequest("global.txt"));  
                      
                    function loader_complete(e:Event):void {  
                        var variables:URLVariables=new URLVariables(loader.data);                 
                        trace(variables["servers"]);  
                                              
                        var serversArr:Array = variables["servers"].toString().split("@#@");  
                        for(var i:int=0;i<serversArr.length;i++){  
                            var server:String = serversArr[i];  
                            var sArr:Array = server.toString().split("$#$");  
                              
                            fmsArr.addItem({label:sArr[0], value:sArr[1]});  
                        }  
                    }  
                      
                    getCookie();  
                }  
                  
                public function getCookie():void{  
                    if(sharedObject.data["pmhidh"]!=null){  
                        pmhID.text = sharedObject.data["pmhidh"];  
                    }  
                    if(sharedObject.data["spfwq"]!=null){  
                        trace(sharedObject.data["spfwq"]);  
                        fms.selectedItem = sharedObject.data["spfwq"];  
                    }  
                    if(sharedObject.data["yl"]!=null){  
                        slider.value = sharedObject.data["yl"];  
                    }  
                      
                }  
                  
                /**  
                 * 开始直播  
                 */  
                protected function startButton_clickHandler(event:MouseEvent):void{  
                      
                    startButton.enabled=false;  
                    stopButton.enabled=true;  
                    nc = new NetConnection();     
                    nc.addEventListener(NetStatusEvent.NET_STATUS,connectServerHander);     
                    nc.client  = this;  
                      
                    trace(fms.selectedItem.label);  
                    nc.connect(fms.selectedItem.value);    
                      
                    slider.enabled=true;  
                }             
                /**  
                 * 回调函数  
                 */  
                public function connectServerHander(evt:NetStatusEvent):void{  
                    cam = Camera.getCamera();     
                    microphone = Microphone.getMicrophone();  
                      
                    if(microphone!=null){  
                        microphone.setSilenceLevel(0);//总是收集音频  
                        microphone.rate=44;  
                    }else{  
                        Alert.show("无法链接到麦克风!");   
                    }  
                      
                    if(cam != null){     
                        cam.setMode(176,144,25);     
                        cam.setQuality(0,90);     
                        ns = new NetStream(nc);      
                        ns.attachCamera(cam);     
                        ns.attachAudio(microphone);  
                        ns.publish(pmhID.text,"append");     
                          
                        vi = new Video();     
                        vi.width = player.width;     
                        vi.height = player.height;     
                        vi.attachCamera(cam);     
                        player.addChild(vi);     
                                              
                    }else{     
                        Alert.show("无法链接到摄像头!");     
                    }     
                }  
                /**  
                 * NetConnection回调函数  
                 */  
                public function onBWDone():void{}   
                  
                  
                /**  
                 * 保存音视频文件  
                 */       
    //          protected function browse_clickHandler(event:MouseEvent):void{  
    //              var file:File = new File();   
    //              file.addEventListener(Event.SELECT,dirSelected);   
    //              file.browseForSave("另存为");   
    //              function dirSelected(e:Event):void {   
    //                  trace(file.nativePath);   
    //                  filefilePath.text = file.nativePath;  
    //              }   
    //          }  
     
                /**  
                 * 音量控制  
                 */  
                protected function slider_changeHandler(event:Event):void{  
                    microphone.gain = slider.value;  
                }  
     
     
                /**  
                 * 停止发布  
                 */  
                protected function stopButton_clickHandler(event:MouseEvent):void{  
                    ns.close();  
                    vi.visible=false;  
                    startButton.enabled=true;  
                    stopButton.enabled=false;  
                }  
                  
                /**  
                 * 关闭窗口触发事件,保存配置  
                 */  
                public function unonload():void{  
                    if(sharedObject!=null){   
                        sharedObject.clear();   
                    }   
                    if(sharedObject.data["pmhidh"]==null){  
                        sharedObject.data["pmhidh"] = pmhID.text;  
                    }  
                    if(sharedObject.data["spfwq"]==null){  
                        sharedObject.data["spfwq"] = fms.selectedItem;  
                    }  
                    if(sharedObject.data["yl"]==null){  
                        sharedObject.data["yl"] = slider.value;  
                    }     
                    sharedObject.flush();  
                }  
     
            ]]--> 
        </fx:Script> 
     
        <fx:Declarations> 
            <!-- 将非可视元素(例如服务、值对象)放在此处 --> 
        </fx:Declarations> 
        <s:Panel width="100%" height="100%" x="0" y="0" id="panel1"> 
            <s:layout> 
                <s:VerticalLayout paddingLeft="0" paddingRight="0" paddingBottom="0" paddingTop="0" requestedRowCount="7"/> 
            </s:layout> 
            <s:VGroup width="430" height="272" paddingTop="10" paddingBottom="0" paddingRight="0" paddingLeft="0"> 
                <s:HGroup width="430" height="220" paddingLeft="5" paddingTop="2" paddingBottom="0" paddingRight="5"> 
                    <s:BorderContainer width="206" height="215"> 
                        <s:VideoDisplay width="193" height="202" scaleMode="letterbox" id="player" x="5" y="5"/> 
                    </s:BorderContainer> 
                    <s:BorderContainer width="206" height="215"> 
                        <s:VGroup width="193" height="208" paddingLeft="5" paddingTop="0" paddingBottom="0"   
     
    paddingRight="5" gap="9" x="5" y="5"> 
                            <s:Label text="拍卖会ID号:" height="14" id="pmhIDLabel"/> 
                            <s:TextInput id="pmhID"/> 
                            <s:Label text="视频服务器:" height="14"/> 
                            <s:ComboBox id="fms" dataProvider="{fmsArr}"/> 
                            <s:Label text="音量" height="14"/> 
                            <s:HSlider id="slider" enabled="false" change="slider_changeHandler(event)" minimum="0"   
     
    maximum="100" stepSize="10"/> 
                        </s:VGroup> 
                    </s:BorderContainer> 
                </s:HGroup> 
                <s:HGroup width="430" height="35" paddingTop="0" paddingBottom="0" paddingRight="5" paddingLeft="145"   
     
    verticalAlign="middle" textAlign="center"> 
                    <s:Button id="startButton" label="开始发布" click="startButton_clickHandler(event)"/> 
                    <s:Button label="停止发布" id="stopButton" enabled="false" click="stopButton_clickHandler(event)"/> 
                </s:HGroup> 
            </s:VGroup> 
        </s:Panel> 
    </s:WindowedApplication> 

    效果如下:

    flash部分/点播代码

    import flash.net.*;  
    import flash.events.*;  
     
    var loader:URLLoader = new URLLoader();  
    loader.dataFormat=URLLoaderDataFormat.VARIABLES;  
    loader.addEventListener(Event.COMPLETE, loader_complete);  
    loader.load(new URLRequest("media2.txt"));  
     
    function loader_complete(e:Event):void {  
        var variables:URLVariables=new URLVariables(loader.data);  
     
        myVideo2.source=variables["source"];  
    }  
    myVideo2.isLive=false; 

    效果如下:

    flash部分/直播代码

    import flash.net.*;  
    import flash.events.*;  
     
    var loader:URLLoader = new URLLoader();  
    loader.dataFormat=URLLoaderDataFormat.VARIABLES;  
    loader.addEventListener(Event.COMPLETE, loader_complete);  
    loader.load(new URLRequest("media.txt"));  
     
    function loader_complete(e:Event):void {  
        var variables:URLVariables=new URLVariables(loader.data);  
     
        myVideo.source=variables["source"];  
    }  
     
    myVideo.isLive=true; 

    效果如下:

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  • 原文地址:https://www.cnblogs.com/coolsundy/p/4859986.html
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