Inspect the playback timeline

You can obtain a description of the timeline associated with the currently selected item being played by TVSDK. This is most useful when your application displays a custom scrub-bar control in which the content sections that correspond to ad content are identified.

Here is an example implementation as seen in the following screen shot.

1. Access the Timeline object in the MediaPlayer using the get method.

   The Timeline class encapsulates the information that is related to the contents of the timeline that is associated with the media item that is currently loaded by the MediaPlayer instance. The Timeline class provides access to a read-only view of the underlying timeline. The Timeline class provides a getter method for obtaining all placed TimelineMarker objects.

2. Iterate through the list of TimelineMarkers and use the returned information to implement your timeline.

   A `TimelineMarker` object contains two pieces of information:
   

   • Position of the marker on the timeline (in milliseconds)
   • Duration of the marker on the timeline (in milliseconds)

// access the timeline object
var timeline:Timeline = mediaPlayer.timeline;

// iterate through the list of TimelineMarkers
var markers:Vector.<TimelineMarker> = timeline.timelineMarkers;
markers.forEach(function(item:TimelineMarker,
                         index:int,
                         vector:Vector.<TimelineMarker>):void {

    // the start position of the marker
    var startPos:Number = item.time;

    // the duration of the marker
    var duration:Number = item.duration;

    // draw the marker on the scrub-bar
}

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