Question

我正在尝试制作像jwplayer这样的动态RTMP视频播放器。我的播放器从swfobect收集流可验证的流，然后在as3中通过netstream播放。我将netstream附加到我的舞台上。但我面临一些奇怪的问题。当我调整舞台大小或全屏播放我的播放器时，视频得到了拉伸。我试过stage.scaleMode，但它无法正常工作。请检查下面的主要as3，并给我一个解决方案，以便我的视频可以获得我的播放器/舞台的任何大小的纵横比。看截图 fullscreen mode screenshot

normal screen Mode

主要ActionScript代码

package com.WindchimeVedioPlayer {
    import flash.media.*;
    import flash.system.Security;
    import flash.net.navigateToURL;
    import flash.net.URLRequest;
    import flash.events.MouseEvent;
    import flash.events.NetStatusEvent;
    import flash.media.Video;
    import flash.net.NetConnection;
    import flash.net.NetStream;
    import flash.display.*;
    import flash.display.DisplayObject;
    import com.WindchimeVedioPlayer.RTMPStream;
    Security.allowDomain("*");

    public class main extends RTMPStream {

        /* the constructor. */
        public function main():void {

            trace("Downstream object has been created."); // debug trace..
            //stage.scaleMode=StageScaleMode.NO_BORDER;
            this.oVideo = new Video(640, 480);
            this.oConnection = new NetConnection();
            this.oConnection.addEventListener(NetStatusEvent.NET_STATUS, eNetStatus, false, 0, true);
            this.oConnection.connect(this.sMediaServerURL);
            addChild(logo);
            //logo.x=440;
            }

        /* triggered when a net status event is received. */
        private function eNetStatus(oEvent1:NetStatusEvent) {

            trace("NetStatusEvent: " + oEvent1.info.code); // debug trace..

            switch (oEvent1.info.code) {
            case "NetConnection.Connect.Success":

                // create a stream for the connection..
                this.oNetStream = new NetStream(oConnection);
                this.oNetStream.addEventListener(NetStatusEvent.NET_STATUS, eNetStatus, false, 0, true);
                this.oNetStream.bufferTime = 5; // set this to whatever is comfortable..

                // listen for meta data..
                this.oMetaData.onMetaData = eMetaDataReceived;
                this.oNetStream.client = this.oMetaData;

                // attach the stream to the stage..
                this.oVideo.attachNetStream(oNetStream);
                this.oNetStream.play(sStreamName);
                this.addChildAt(this.oVideo, 0);

                trace("Connected to the RTMP server."); // debug trace..
                break;

            case "NetConnection.Connect.Closed":

                trace("Disconnected from the RTMP server."); // debug trace..
                break;

            case "NetStream.Play.StreamNotFound":

                trace("This stream is currently unavailable."); // debug trace..
                break;
            }

        }

    }

}

请参阅操作脚本代码，并建议我如何修复它。

Answer 1

好this.oNetStream.client = this.oMetaData;需要由元数据处理功能备份。在那里你想要阅读原始视频宽度/高度＆amp;用它来调整容器尺寸以适应（保持纵横比）。我还建议使用Sprite作为视频的容器，而不是仅仅在舞台上粘贴它，如果你想变得有趣，以后更容易使用它。）

public var oMetaData : Object; //will keep a database of meta info

// listen for meta data..
oMetaData = new Object();
oMetaData.onMetaData = received_Meta;
oNetStream.client = oMetaData;

然后包括此函数来处理

function received_Meta (data:Object):void
{       
    trace("Detected Video Width  (pixels) : " + data.width);
    trace("Detected Video Height (pixels) : " + data.height);

    var _stageW:int = stage.stageWidth;
    var _stageH:int = stage.stageHeight;

    var _videoW:int;
    var _videoH:int;
    var _aspectH:int; 

    var Aspect_num:Number; //should be an "int" but that gives blank picture with sound
    Aspect_num = data.width / data.height;

    //Aspect ratio calculated here..
    _videoW = _stageW;
    _videoH = _videoW / Aspect_num; //or try: _videoW * Aspect_num; 
    _aspectH = (_stageH - _videoH) / 2;

    oVideo.x = 0;
    oVideo.y = _aspectH;
    oVideo.width = _videoW;
    oVideo.height = _videoH;
}

更新：说明您将如何阅读元数据......

此行function received_Meta (data:Object):void使用data作为元数据持有者的参考名称（类型:Object）。

在我发布的代码中，我有(data:Object)，因此这行符号Aspect_num = data.height

如果您将其更改为：
(oObject:Object)现在该行的作用为Aspect_num = oObject.height

RT3 / Netstream视频宽高比as3

1 个答案: