视频流：“onBWDone：未定义”，并不能播放视频

Question

我试图从流亚马逊的CloudFront的/ S3服务的视频。尽管我的文件名是正确的，并且是“NetConnection.Connect.Success”状态，但我的NetConnection onBWDone回调会给我一个“未定义”的错误，并且该视频不会在舞台上的任何位置播放或显示。连接报告说它是成功的，所以我不知道问题出在哪里。这里是我的代码：

var amazonCloudFrontDomain:String = "myCloudFrontDistributionID.cloudfront.net"; 
var amazonCloudFrontStreamURL:String = "rtmp://" + amazonCloudFrontDomain + "/cfx/st/"; 
var videoFileName:String = "myVideo.flv"; 

Security.allowDomain(amazonCloudFrontDomain); 
Security.allowDomain("rtmp://" + amazonCloudFrontDomain); 
Security.allowDomain(amazonCloudFrontStreamURL); 


var client:Object = new Object(); 
client.onBWDone = function(e){trace("onBWDone: " + e);} 
client.onMetaData = function(e){trace("onMetaData: " + e);} 
client.onCuePoint = function(e){trace("onCuePoint: " + e);} 


var video:Video = new Video(300, 400); // create a new Video item and set its width and height 
video.x = 0; // position the video's x position 
video.y = 0; // position the video's y position 
var duration:Number; // use this later to get the duration of the video being played 
this.addChild(video); 

var nc:NetConnection = new NetConnection(); // variable for a new NetConnection 
nc.client = client; 
nc.addEventListener(NetStatusEvent.NET_STATUS,netConnectionStatusHandler,false,0,true); 
nc.connect(amazonCloudFrontStreamURL); // set the nc variable to null 

var ns:NetStream; 
function netConnectionStatusHandler(e):void 
{ 
    switch(e.info.code) 
    { 
     case "NetConnection.Connect.Success": 
      trace("S3 Connected"); 

      ns = new NetStream(nc); // create a variable for a new NetStream connection & connect it to the nc variable 
      ns.addEventListener(NetStatusEvent.NET_STATUS, netStreamStatusHandler); // add a listener to the NetStream to listen for any changes that happen with the NetStream 
      ns.addEventListener(AsyncErrorEvent.ASYNC_ERROR, netStreamAsyncErrorHandler); // add a listener to the NetStream for any errors that may happen 
      ns.client = client; 

      video.attachNetStream(ns); // attach the NetStream variable to the video object 
      video.smoothing = true; 
      video.deblocking = 1; 

      ns.bufferTime = 5; // set the buffer time to 5 seconds 
      ns.play(videoFileName); // tell the netstream what video to play and play it 
      break; 
    } 
    trace(e.info.code); 
} 


function netStreamAsyncErrorHandler(Event:AsyncErrorEvent):void 
{ 
    // trace(event.text); // this will handle any errors with video playback 
} 

function netStreamStatusHandler(event:NetStatusEvent):void 
{ 
    trace(event.info.code); // this will handle any events that are fired when the video is playing back 
    switch(event.info.code) // switch statement to handle the various events with the NetConnection 
    { 

     case "NetStream.Buffer.Full": // when the buffer is full fire the code below 
      ns.bufferTime = 10; // set buffer time to 10 seconds  break; 
     case "NetStream.Buffer.Empty": // when the buffer is empty fire, code below 
      ns.bufferTime = 10; // set buffer time to 10 seconds 
     break; 
     case "NetStream.Play.Start": // when the video starts playing, fire the code below 
      ns.bufferTime = 10; // set the buffer time to 10 seconds 
     break; 
     case "NetStream.Seek.Notify": // when you seek with the scrubber it sends a notify signal of the time 
      ns.bufferTime = 10; // set the buffer time to 10 seconds 
     break; 
     case "NetStream.Seek.InvalidTime": // when you release the scrubber ahead of the video that has been loaded, you get this error. it will jump you back to the last frame that has been loaded 
      ns.bufferTime = 10; // set the buffer time to 10 seconds 
     break; 
     case "NetStream.Play.Stop": // when you reach the end of the video 
      ns.pause(); // pause the video 
      ns.seek(1); // seek the video to the first frame 
     break; 
    } 
} 

这是控制台输出：

S3 Connected 
netConnectionStatusHandler: NetConnection.Connect.Success 
onBWDone: undefined 
NetStream.Play.Reset 
NetStream.Play.Start 

...并没有任何反应。没有视频，没有音频，什么都没有。任何人都可以看到我的代码的任何问题？

Answer 1

我认为，不是所有的流媒体应用必须使用onBWDone功能，因此，如果他们不使用它，它可能传递空或未定义的函数，而不是kbps的。

所以你的问题很可能与下面的跟踪语句e：

client.onBWDone = function(e){trace("onBWDone: " + e);} 

此外，该函数不收到一个事件对象，而是一个... rest阵列，通常只有在一个项目它。试试这个： http://help.adobe.com/en_US/FlashMediaServer/3.5_Deving/WS5b3ccc516d4fbf351e63e3d11a0773d56e-7ffa.html

编辑

在问候你的视频路径：

的Flash Media Server应用程序访问

client.onBWDone = function(... rest){ // 
    if(rest && rest.length > 0){ //since the function might not get any data, you need to check before trying to trace it out 
     trace("onBWDone: " + rest[0]); //this is the kbps of the bandwidth available 
    } 
}; 

您可以从Adobe的文档了解更多在rtmp上使用以下格式：“server：port/application/instance”。对于VOD，实例是您的文件的名称，对于FLV，它不需要扩展名。

http://help.adobe.com/en_US/FlashMediaServer/3.5_Deving/WS5b3ccc516d4fbf351e63e3d11a0773cfae-7ff3.html

Answer 2

我改变

var videoFileName:String = "myVideo.flv"; 

到

var videoFileName:String = "myVideo"; 

，现在它的工作原理。出于某种原因，排除文件扩展名使它适用于我。我不知道为什么......奇怪。