Question

我想为流畅的流媒体元素创建序列组合，其中媒体元素的某些特定部分来自多个或单个清单（.isml）。我尝试使用isml包含该剪辑部分从10秒到50秒开始创建序列合成，然后在序列合成中添加下一个元素，以便从其他清单中播放50秒到150秒的部分。但不是播放指定的清单部分它从头到尾播放，一旦播放第一个isml，它就不会切换到序列组成的下一个元素。当它检查它正在处理mozila上的火虫时，我发现碎片请求是连续发送的，但玩家无法显示它。

代码： -

包 {

import flash.display.*;
import com.microsoft.azure.media.AdaptiveStreamingPluginInfo;
import org.osmf.containers.MediaContainer;
import org.osmf.elements.SerialElement;
import org.osmf.elements.VideoElement;
import org.osmf.events.MediaErrorEvent;
import org.osmf.events.MediaFactoryEvent;
import org.osmf.events.MediaPlayerStateChangeEvent;
import org.osmf.layout.*;
import org.osmf.media.*;
import org.osmf.net.StreamType;
import org.osmf.net.StreamingURLResource;
import org.osmf.net.StreamingItemType;

[SWF(width="1024", height="768", backgroundColor='#ffffff')]
public class OSMFComposition extends Sprite
{
    public var _container:MediaContainer;
    public var _mediaFactory:DefaultMediaFactory;
    private var _mediaPlayerSprite:MediaPlayerSprite;

    private const Media_Url1:String="http://<media server>/Sintel/Sintel_H264.ism/manifest";
    private const Media_Url2:String="http://<media server>/PushToPublishPoint/test.isml/manifest";
    private const add1:String="assets/1.mp4"
    private const add2:String="assets/2.mp4"
    private var serialElement:SerialElement;
    private var mediaPlayer:MediaPlayer;
    private var container:MediaContainer;

    public function OSMFComposition()
    {

        serialElement=new SerialElement();

        mediaPlayer=new MediaPlayer();

        stage.quality = StageQuality.HIGH;

        initMediaPlayer();

    }

    private function initMediaPlayer():void
    {

        // Create a mediafactory instance
        _mediaFactory = new DefaultMediaFactory();

        // Add the listeners for PLUGIN_LOADING
        _mediaFactory.addEventListener(MediaFactoryEvent.PLUGIN_LOAD,onPluginLoaded);

        // Load the plugin class 
        loadAdaptiveStreamingPlugin( );  

    }

    private function loadAdaptiveStreamingPlugin( ):void
    {
        var pluginResource:MediaResourceBase;

        pluginResource = new PluginInfoResource(new AdaptiveStreamingPluginInfo( ));

        _mediaFactory.loadPlugin( pluginResource ); 
    }

    private function onPluginLoaded( event:MediaFactoryEvent ):void
    {
        // The plugin is loaded successfully.
        // Your web server needs to host a valid crossdomain.xml file to allow plugin to download Smooth Streaming files.
        loadMediaSource();

    }



    private function loadMediaSource():void 
    {
        var preRoll:MediaElement = _mediaFactory.createMediaElement( new URLResource(add1) );

        var preRoll2:MediaElement = _mediaFactory.createMediaElement( new URLResource(add2) );

        var resource1:StreamingURLResource=new StreamingURLResource(Media_Url1,null,10,50);

        var element1:MediaElement = _mediaFactory.createMediaElement( resource1 );

        var resource2:StreamingURLResource= new StreamingURLResource(Media_Url2,null,150,200);

        var element2:MediaElement = _mediaFactory.createMediaElement( resource2 );

        serialElement.addChild( preRoll);

        serialElement.addChild(element2);

        serialElement.addChild( preRoll2);

        serialElement.addChild(element1);

        mediaPlayer=new MediaPlayer(serialElement);

        container=new MediaContainer();

        container.addMediaElement(serialElement);

        this.addChild(container);
    }     

}

}

谢谢

OSMF串行组合，具有流畅的流媒体元素

0 个答案: