打造一個多人串流系統
基本上伺服器用的是adobe media server 免費版開放連接數是10個為上限
然後程式碼的話，像在常見的環境，有的人可能不想裝flash，或者裝其他套件來播放，就以fb來說，假設可能要裝flash那時候可能就有可能一堆人都不要用了，當然有內建，現在是html5的時代，後續我會補上這功能。
就以稍微看一下目前的話
包括flash
adobe media server 後台
也就是
可以共同分享這個物件
打開document參考一下
程式碼
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| <?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" | |
| creationComplete="windowedapplication1_creationCompleteHandler(event)"> | |
| <fx:Declarations> | |
| <!-- Place non-visual elements (e.g., services, value objects) here --> | |
| </fx:Declarations> | |
| <fx:Script> | |
| <![CDATA[ | |
| import flash.display.MovieClip; | |
| import flash.events.NetStatusEvent; | |
| import flash.media.Camera; | |
| import flash.media.Microphone; | |
| import flash.media.Video; | |
| import flash.net.NetConnection; | |
| import flash.net.NetStream; | |
| import mx.core.UIComponent; | |
| import mx.events.FlexEvent; | |
| var nc:NetConnection; | |
| var ns:NetStream; | |
| var nsPlayer:NetStream; | |
| var vid:Video; | |
| var vidPlayer:Video; | |
| var cam:Camera; | |
| var mic:Microphone; | |
| var screen_w:int=320; | |
| var screen_h:int=240; | |
| public function onBWDone():void { | |
| trace("11"); | |
| } | |
| public function simplest_as3_rtmp_streamer() | |
| { | |
| nc = new NetConnection(); | |
| nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus); | |
| nc.client ={ onBWDone: function():void{} }; | |
| nc.connect("rtmp://localhost/live"); | |
| } | |
| private function onNetStatus(event:NetStatusEvent):void{ | |
| trace(event.info.code); | |
| if(event.info.code == "NetConnection.Connect.Success"){ | |
| publishCamera(); | |
| displayPublishingVideo(); | |
| displayPlaybackVideo(); | |
| } | |
| } | |
| private function publishCamera() { | |
| //Cam | |
| cam = Camera.getCamera(); | |
| /** | |
| * public function setMode(width:int, height:int, fps:Number, favorArea:Boolean = true):void | |
| * width:int — The requested capture width, in pixels. The default value is 160. | |
| * height:int — The requested capture height, in pixels. The default value is 120. | |
| * fps:Number — The requested capture frame rate, in frames per second. The default value is 15. | |
| */ | |
| cam.setMode(640, 480,60); | |
| /** | |
| * public function setKeyFrameInterval(keyFrameInterval:int):void | |
| * The number of video frames transmitted in full (called keyframes) instead of being interpolated by the video compression algorithm. | |
| * The default value is 15, which means that every 15th frame is a keyframe. A value of 1 means that every frame is a keyframe. | |
| * The allowed values are 1 through 300. | |
| */ | |
| cam.setKeyFrameInterval(60); | |
| /** | |
| * public function setQuality(bandwidth:int, quality:int):void | |
| * bandwidth:int — Specifies the maximum amount of bandwidth that the current outgoing video feed can use, in bytes per second (bps). | |
| * To specify that the video can use as much bandwidth as needed to maintain the value of quality, pass 0 for bandwidth. | |
| * The default value is 16384. | |
| * quality:int — An integer that specifies the required level of picture quality, as determined by the amount of compression | |
| * being applied to each video frame. Acceptable values range from 1 (lowest quality, maximum compression) to 100 | |
| * (highest quality, no compression). To specify that picture quality can vary as needed to avoid exceeding bandwidth, | |
| * pass 0 for quality. | |
| */ | |
| cam.setQuality(0,100); | |
| /** | |
| * public function setProfileLevel(profile:String, level:String):void | |
| * Set profile and level for video encoding. | |
| * Possible values for profile are H264Profile.BASELINE and H264Profile.MAIN. Default value is H264Profile.BASELINE. | |
| * Other values are ignored and results in an error. | |
| * Supported levels are 1, 1b, 1.1, 1.2, 1.3, 2, 2.1, 2.2, 3, 3.1, 3.2, 4, 4.1, 4.2, 5, and 5.1. | |
| * Level may be increased if required by resolution and frame rate. | |
| */ | |
| //var h264setting:H264VideoStreamSettings = new H264VideoStreamSettings(); | |
| // h264setting.setProfileLevel(H264Profile.MAIN, 4); | |
| //Mic | |
| mic = Microphone.getMicrophone(); | |
| /* | |
| * The encoded speech quality when using the Speex codec. Possible values are from 0 to 10. The default value is 6. | |
| * Higher numbers represent higher quality but require more bandwidth, as shown in the following table. | |
| * The bit rate values that are listed represent net bit rates and do not include packetization overhead. | |
| * ------------------------------------------ | |
| * Quality value | Required bit rate (kbps) | |
| *------------------------------------------- | |
| * 0 | 3.95 | |
| * 1 | 5.75 | |
| * 2 | 7.75 | |
| * 3 | 9.80 | |
| * 4 | 12.8 | |
| * 5 | 16.8 | |
| * 6 | 20.6 | |
| * 7 | 23.8 | |
| * 8 | 27.8 | |
| * 9 | 34.2 | |
| * 10 | 42.2 | |
| *------------------------------------------- | |
| */ | |
| mic.encodeQuality = 9; | |
| /* The rate at which the microphone is capturing sound, in kHz. Acceptable values are 5, 8, 11, 22, and 44. The default value is 8 kHz | |
| * if your sound capture device supports this value. Otherwise, the default value is the next available capture level above 8 kHz that | |
| * your sound capture device supports, usually 11 kHz. | |
| * | |
| */ | |
| mic.rate = 44; | |
| ns = new NetStream(nc); | |
| //H.264 Setting | |
| //ns.videoStreamSettings = h264setting; | |
| ns.attachCamera(cam); | |
| ns.attachAudio(mic); | |
| ns.publish("myCamera", "live"); | |
| } | |
| private function displayPublishingVideo():void { | |
| vid = new Video(screen_w, screen_h); | |
| vid.x = 10; | |
| vid.y = 10; | |
| vid.attachCamera(cam); | |
| var tmp:UIComponent = new UIComponent(); | |
| tmp.addChild(vid); | |
| canvas2.addElement(tmp); | |
| } | |
| private function displayPlaybackVideo():void{ | |
| nc.client ={ onBWDone: function():void{} }; | |
| nsPlayer = new NetStream(nc); | |
| nsPlayer.bufferTime = 0.1; | |
| nsPlayer.play("myCamera"); | |
| vidPlayer = new Video(screen_w, screen_h); | |
| vidPlayer.x = screen_w + 20; | |
| vidPlayer.y = 10; | |
| vidPlayer.attachNetStream(nsPlayer); | |
| var tmp:UIComponent = new UIComponent(); | |
| tmp.addChild(vidPlayer); | |
| canvas.addElement(tmp); | |
| } | |
| protected function windowedapplication1_creationCompleteHandler(event:FlexEvent):void | |
| { | |
| // TODO Auto-generated method stub | |
| nc = new NetConnection(); | |
| nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus); | |
| nc.connect("rtmp://localhost:1935/live"); | |
| nc.ad | |
| } | |
| ]]> | |
| </fx:Script> | |
| <mx:Canvas id="canvas" x="12" y="22" width="255" height="207"> | |
| </mx:Canvas> | |
| <mx:Canvas id="canvas2" x="50" y="22" width="255" height="207"> | |
| </mx:Canvas> | |
| </s:Application> |
修改了大概考慮到控件的貼圖等等不考用慮用
addchild這個算比較舊的，所以改用
var tmp:UIComponent = new UIComponent();
tmp.addChild(vidPlayer);
canvas.addElement(tmp);
nc.client ={ onBWDone: function():void{} };
回調
再來就是最重要的
NetStream的buffertime=0.1;
這關係到畫面上的抖動，在開刀的時候很重要呢，不過痾，缺點就是會延遲
到時候公司的伺服器可能又要升級了，
再者就是
目前使用flash去開發
因為考慮到跨平台
所以在打造一個多人的系統呢我打算用裡面的shareobject
編譯
請注意
太舊了，這點下去會開啟ie，在windows10的時候把預設瀏覽器設為chrome，他直接沒反應，裝完的時候，這才是問題的第一步，我們請看下一步
執行
端口會跟flash media server 的後台互衝，所以我們的伺服器換個端口8080
有可能要離線設置或著flash player 權限問題
有可能要來這裡新增一下把網站的swf都加入
執行part2
直接執行的話，還是會跳出錯誤訊息，然後跳出一個ie，然後就沒有然後了，這個時候會卡在50%，
可能是windows 預設瀏覽器裡面就有裝adobe不過那裏面沒有debug plugin之類的，所以flash buileder會卡在那邊等deubg工具回應，不過沒關係我們在編譯的那邊已經裝了，chrome的debug工具，所以現在我們貼上網址去chrome瀏覽器
成功可以debug囉
畫面
初期架構
那麼我只要在shareobject裡面master一定是第一個放主畫面，自己的url略過這樣的話就算
初步實現多人會議了，痾就這麼簡單，要實作一個直播平台，youtube串流也可以不過協定應該不會使用rtmp，當然在伺服器分流也要做好處理，網速當然是重點，cpu解碼速度不知道有沒有用這可能就要深入探討，下回揭曉沒意外應該會寫sharobject應用到實際
參考
