如何检测视频何时缓冲? [英] How to detect when video is buffering?

问题描述

我今天的问题是关于 Flash AS3 视频缓冲.(流式或渐进式)我希望能够检测到视频何时被缓冲，这样我就可以显示某种动画，让用户知道再等一会儿.

my question today deals with Flash AS3 video buffering. (Streaming or Progressive) I want to be able to detect when the video is being buffered, so I can display some sort of animation letting the user know to wait just a little longer.

目前我的视频将启动，按住第 1 帧 3-4 秒然后播放.有点给人一种视频暂停或损坏的印象:(

Currently my video will start up, hold on frame 1 for 3-4 secs then play. Kinda giving the impression that the video is paused or broken :(

感谢 iandisme，我相信我现在正朝着正确的方向前进.来自 livedocs 的 NetStatusEvent.在我看来，工作的关键状态是 "NetStream.Buffer.Empty" 所以我在那里添加了一些代码，看看这是否会触发我的动画或跟踪语句.还没有运气，但是当缓冲区已满时，它会触发我的代码:/也许我的视频总是介于 Buffer.Empty 和 Buffer.Full 之间，这就是为什么它不会'当我为 Buffer.Empty 测试用例时触发任何代码?

Thanks to iandisme I believe I'm faced in the right direction now. NetStatusEvent from livedocs. It seems to me that the key status to be working in is "NetStream.Buffer.Empty" so I added some code in there to see if this would trigger my animation or a trace statement. No luck yet, however when the Buffer is full it will trigger my code :/ Maybe my video is always somewhere between Buffer.Empty and Buffer.Full that's why it won't trigger any code when I test case for Buffer.Empty?

public function netStatusHandler(event:NetStatusEvent):void 
  {
     // handles net status events
     switch (event.info.code) 

        {
            case "NetStream.Buffer.Empty":
                  trace("☼☼☼ Buffering!"); //<- never traces
                  addChild(bufferLoop);    //<- doesn't execute
            break;

            case "NetStream.Buffer.Full":
                  trace("☼☼☼ FULL!");      //<- trace works here
                  removeChild(bufferLoop); //<- so does any other code
            break;

            case "NetStream.Buffer.Flush":
                  trace("☼☼☼ FLUSH!");
                  //Not sure if this is important
            break
        }
    }

推荐答案

您是否使用自定义滚动播放器?我知道 FLVPlayback 类有一个 缓冲事件 内置.

Are you using a custom-rolled player? I know the FLVPlayback class has a buffering event built-in.

如果您不使用 FLVPlayback，则 NetStream 对象会触发 netStatusEvent，其中包含 信息对象 每次开始或停止缓冲.您应该能够捕获该事件并使用它播放/隐藏您的动画.

If you're not using FLVPlayback, the NetStream object fires a netStatusEvent that includes an info object every time it starts or stops buffering. You should be able to capture that event and play/hide your animation with that.

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