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在视频中添加动作脚本提示点?

osmf actionscript-3

1

redconservatory · 技术社区 · 16 年前

我正在尝试使用OSMF在视频中添加一个提示点。我构建了一个OSMF视频播放器,我想用它代替flvPlayback组件,这似乎是添加actionscript提示点的唯一方法?

不管怎样,我通过写这个来创建一个提示点:

var cuePoint:CuePoint = new CuePoint(CuePointType.ACTIONSCRIPT, 1, "good point", null);
            videoElement.addEventListener(MediaElementEvent.METADATA_ADD, onMetadataAdd);

            trace(cuePoint.time);

提示点时间可追溯到“1”(成功)。

然后,我从文档中获取了这段代码,认为它将有助于在我发布电影(测试视频)时跟踪提示点。

private function onMetadataAdd(event:MediaElementEvent):void
        {
            if (event.namespaceURL == CuePoint.DYNAMIC_CUEPOINTS_NAMESPACE)
            {
                var timelineMetadata:TimelineMetadata = videoElement.getMetadata(CuePoint.DYNAMIC_CUEPOINTS_NAMESPACE) as TimelineMetadata;
                timelineMetadata.addEventListener(TimelineMetadataEvent.MARKER_TIME_REACHED, onCuePoint);
            }
        }

        private function onCuePoint(event:TimelineMetadataEvent):void
        {
            var cuePoint:CuePoint = event.marker as CuePoint;
            trace("Cue Point at " + cuePoint.time);
        }

但是,当视频达到1秒时,我不会收到跟踪消息。有人能帮我吗?

2 回复 | 直到 15 年前

1

2

adamcodes 16 年前

我觉得应该是 private function onMetadata .

2

1

redconservatory 15 年前

下面是另一种添加提示点的方法,这有点简单:

    private function addVideoWithACuePoint()
    {
    url:String = "your-url";
    resource = new URLResource(url);
    videoElement = new VideoElement(resource);

    player = new MediaPlayer();
    player.media = videoElement;

    conainer = new MediaContainer(); 
    container.addMediaElement(videoElement);
    myTimelineMetadata = new TimelineMetadata(videoElement);
    myTimelineMetadata.addEventListener(TimelineMetadataEvent.MARKER_TIME_REACHED, onCuePointHandler, false, 0, true); 

   // add a cuepoint below:
    var cuePoint = new CuePoint(CuePointType.ACTIONSCRIPT,time, name, parameters);                  
    myTimelineMetadata.addMarker(cuePoint); 
}

基本上:

创建播放器和容器
将视频元素添加到播放机
然后您可以从视频元素创建新的时间线元数据
然后你可以添加提示点