VideoElement

Package	org.osmf.elements
Class	public class VideoElement
Inheritance	VideoElement LightweightVideoElement LoadableElementBase MediaElement EventDispatcher Object

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

VideoElement is a media element specifically created for video playback. It supports streaming and progressive formats, as well as HTTP streaming and MBR streaming (for both RTMP and HTTP).

VideoElement is a more full-featured alternative to LightweightVideoElement. Whereas LightweightVideoElement supports only a subset of video delivery modes (specifically progressive and simple RTMP streaming), VideoElement supports all video delivery modes.

The VideoElement uses a NetLoader class to load and unload its media. Developers requiring custom loading logic for video can pass their own loaders to the LightweightVideoElement constructor. These loaders should subclass NetLoader.

The basic steps for creating and using a LightweightVideoElement are:

Create a new URLResource pointing to the URL of the video stream or file containing the video to be loaded.
Create a new NetLoader.
Create the new VideoElement, passing the NetLoader and URLResource as parameters.
Create a new MediaPlayer.
Assign the VideoElement to the MediaPlayer's media property.
Control the media using the MediaPlayer's methods, properties, and events.
When done with the VideoElement, set the MediaPlayer's media property to null. This will unload the VideoElement.

The VideoElement supports Flash Media Token Authentication, for passing authentication tokens through the NetConnection.

The VideoElement has support for the Flash Player's DRM implementation. Note that the startDate, endDate, and period properties of the DRMTrait on this element correspond to the voucher validity before playback starts. Once playback begins, these properties correspond to the playback time window (as found on flash.net.drm.DRMVoucher).

View the examples

Related API Elements

org.osmf.elements.LightweightVideoElement
org.osmf.media.URLResource
org.osmf.media.MediaElement
org.osmf.media.MediaPlayer
org.osmf.net.NetLoader
flash.net.drm.DRMVoucher

Public Properties

	Property		Defined By
		client : NetClient [read-only] The NetClient used by this object's NetStream.	LightweightVideoElement
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		container : IMediaContainer [read-only] The media container that this element uses.	MediaElement
		currentFPS : Number [read-only] The number of frames per second being displayed.	LightweightVideoElement
		deblocking : int Indicates the type of filter applied to decoded video as part of post-processing.	LightweightVideoElement
		defaultDuration : Number Defines the duration that the element's TimeTrait will expose until the element's content is loaded.	LightweightVideoElement
		metadataNamespaceURLs : Vector.<String> [read-only] A Vector containing the namespace URLs for all Metadata objects stored within this MediaElement.	MediaElement
		resource : MediaResourceBase The media resource that this media element operates on.	MediaElement
		smoothing : Boolean Specifies whether the video should be smoothed (interpolated) when it is scaled.	LightweightVideoElement
		traitTypes : Vector.<String> [read-only] A Vector of MediaTraitType values representing the trait types on this media element.	MediaElement

Protected Properties

	Property		Defined By
		loader : LoaderBase The LoaderBase used by this element to load resources.	LoadableElementBase

Public Methods

	Method		Defined By
		VideoElement(resource:MediaResourceBase = null, loader:NetLoader = null) Constructor.	VideoElement
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.	EventDispatcher
		addMetadata(namespaceURL:String, metadata:Metadata):void Adds a Metadata object to this MediaElement under the specified namespace URL.	MediaElement
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		getMetadata(namespaceURL:String):Metadata Returns the Metadata object that is stored under this MediaElement with the specified namespace URL.	MediaElement
		getTrait(type:String):org.osmf.traits:MediaTraitBase Returns the media trait of the specified type.	MediaElement
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		hasTrait(type:String):Boolean Determines whether this media element has a media trait of the specified type.	MediaElement
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	EventDispatcher
		removeMetadata(namespaceURL:String):Metadata Removes the Metadata object that was stored under this MediaElement with the specified namespace URL.	MediaElement
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	EventDispatcher

Protected Methods

	Method		Defined By
		addTrait(type:String, instance:org.osmf.traits:MediaTraitBase):void Adds a new media trait to this media element.	MediaElement
		createLoadTrait(resource:MediaResourceBase, loader:LoaderBase):org.osmf.traits:LoadTrait Subclasses can override this method to return a custom LoadTrait subclass.	LoadableElementBase
		processLoadingState():void Subclasses can override this method to do processing when the media element enters the LOADING state.	LoadableElementBase
		processReadyState():void Subclasses can override this method to do processing when the media element enters the READY state.	LoadableElementBase
		processUnloadingState():void Subclasses can override this method to do processing when the media element enters the UNLOADING state.	LoadableElementBase
		removeTrait(type:String):org.osmf.traits:MediaTraitBase Removes a media trait from this media element.	MediaElement
		setupTraits():void Sets up the traits for this media element.	MediaElement

Events

Click for more information on events

	Summary	Defined By
activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
containerChange	Dispatched when the element's container property changed.	MediaElement
deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher
mediaError	Dispatched when an error which impacts the operation of the media element occurs.	MediaElement
mediaInfo	Dispatched when a info which impacts the operation of the media element is available.	MediaElement
metadataAdd	Dispatched when a Metadata object has been added to this media element.	MediaElement
metadataRemove	Dispatched when a Metadata object has been removed from this media element.	MediaElement
traitAdd	Dispatched when a trait is added to the media element.	MediaElement
traitRemove	Dispatched when a trait is removed from the media element.	MediaElement

Constructor Detail

VideoElement

()

Constructor

public function VideoElement(resource:MediaResourceBase = null, loader:NetLoader = null)

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Constructor.

Parameters

	`resource:MediaResourceBase` (default = `null`) — URLResource that points to the video source that the VideoElement will use. For dynamic streaming content, use a DynamicStreamingResource.

	`loader:NetLoader` (default = `null`) — NetLoader used to load the video. If null, the appropriate NetLoader will be created based on the resource type.

Throws

ArgumentError — If resource is not an URLResource.

Examples How to use this example

VideoElementExample.as

package
{
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    
    import org.osmf.elements.VideoElement;
    import org.osmf.media.MediaPlayer;
    import org.osmf.media.MediaPlayerSprite;
    import org.osmf.media.URLResource;
    import org.osmf.net.DynamicStreamingItem;
    import org.osmf.net.DynamicStreamingResource;
    
    public class VideoElementExample extends Sprite
    {
        public function VideoElementExample()
        {
            super();
            
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.align = StageAlign.TOP_LEFT;
            
            var mediaPlayerSprite:MediaPlayerSprite = new MediaPlayerSprite();
            var videoElement:VideoElement = new VideoElement();
            var dynResource:DynamicStreamingResource = new DynamicStreamingResource("rtmp://cp67126.edgefcs.net/ondemand");
            
            dynResource.streamItems = Vector.<DynamicStreamingItem>(
                [     new DynamicStreamingItem("mp4:mediapm/ovp/content/demo/video/elephants_dream/elephants_dream_768x428_24.0fps_408kbps.mp4", 408, 768, 428)
                    , new DynamicStreamingItem("mp4:mediapm/ovp/content/demo/video/elephants_dream/elephants_dream_768x428_24.0fps_608kbps.mp4", 608, 768, 428)
                    , new DynamicStreamingItem("mp4:mediapm/ovp/content/demo/video/elephants_dream/elephants_dream_1024x522_24.0fps_908kbps.mp4", 908, 1024, 522)
                    , new DynamicStreamingItem("mp4:mediapm/ovp/content/demo/video/elephants_dream/elephants_dream_1024x522_24.0fps_1308kbps.mp4", 1308, 1024, 522)
                    , new DynamicStreamingItem("mp4:mediapm/ovp/content/demo/video/elephants_dream/elephants_dream_1280x720_24.0fps_1708kbps.mp4", 1708, 1280, 720)
                ]);
            
            videoElement.resource = dynResource;
            
            addChild(mediaPlayerSprite);
            mediaPlayerSprite.media = videoElement;    
        }    
    }
}

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VideoElement - AS3 OSMF

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