问VideoDisplay :使用Flex组件在直播流之间进行多码率切换

EN

<s:VideoDisplay id="rtmpABRVideo" width="320" height="240" initialize="rtmpABRVideo.mx_internal::videoPlayer.bufferTime=2">
  <s:DynamicStreamingVideoSource host="rtmp://localhost:1935/live" streamType="live">
    <s:DynamicStreamingVideoItem streamName="webcam_1000" bitrate="1000" />
    <s:DynamicStreamingVideoItem streamName="webcam_500" bitrate="500" />
    <s:DynamicStreamingVideoItem streamName="webcam_150" bitrate="150" />
  </s:DynamicStreamingVideoSource> 
</s:VideoDisplay>

var dynResource:DynamicStreamingResource = new DynamicStreamingResource('rtmp://localhost/live');
dynResource.urlIncludesFMSApplicationInstance = false;
dynResource.streamItems = Vector.<DynamicStreamingItem>([
                                new DynamicStreamingItem("mp4:webcam_150", 150, 320, 240),
                                new DynamicStreamingItem("mp4:webcam_500", 500, 320, 240),
                                new DynamicStreamingItem("mp4:webcam_1000", 1000, 320, 240)
                          ]);

var videoElement:VideoElement = new VideoElement();
videoElement.resource = dynResource;

var mediaPlayerSprite:MediaPlayerSprite = new MediaPlayerSprite();
mediaPlayerSprite.width = 320;
mediaPlayerSprite.height = 240;
mediaPlayerSprite.media = videoElement;
mediaPlayerSprite.mediaPlayer.bufferTime = 2;

addChild(mediaPlayerSprite);