VideoElement

Pacote	org.osmf.elements
Classe	public class VideoElement
Herança	VideoElement LightweightVideoElement LoadableElementBase MediaElement EventDispatcher Object

Versão da linguagem:

ActionScript 3.0

Versão de produto:

OSMF 1.0

Versões de runtime:

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).

Veja os exemplos

Elementos da API relacionados

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

Propriedades públicas

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	Propriedade		Definido por
		client : NetClient [somente leitura] The NetClient used by this object's NetStream.	LightweightVideoElement
		constructor : Object Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto.	Object
		container : IMediaContainer [somente leitura] The media container that this element uses.	MediaElement
		currentFPS : Number [somente leitura] 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> [somente leitura] 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> [somente leitura] A Vector of MediaTraitType values representing the trait types on this media element.	MediaElement

Propriedades protegidas

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	Propriedade		Definido por
		loader : LoaderBase The LoaderBase used by this element to load resources.	LoadableElementBase

Métodos públicos

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	Método		Definido por
		VideoElement(resource:MediaResourceBase = null, loader:NetLoader = null) Constructor.	VideoElement
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registra um objeto de ouvinte de evento em um objeto EventDispatcher, de forma que o ouvinte receba a notificação de um evento.	EventDispatcher
		addMetadata(namespaceURL:String, metadata:Metadata):void Adds a Metadata object to this MediaElement under the specified namespace URL.	MediaElement
		dispatchEvent(event:Event):Boolean Envia um evento para o fluxo de eventos.	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 Verifica se o objeto EventDispatcher tem ouvintes registrados para um tipo específico de evento.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indica se um objeto tem uma propriedade especificada definida.	Object
		hasTrait(type:String):Boolean Determines whether this media element has a media trait of the specified type.	MediaElement
		isPrototypeOf(theClass:Object):Boolean Indica se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro.	Object
		propertyIsEnumerable(name:String):Boolean Indica se a propriedade especificada existe e é enumerável.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Remove um ouvinte do objeto EventDispatcher.	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 Define a disponibilidade de uma propriedade dinâmica para operações de repetição.	Object
		toLocaleString():String Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade.	Object
		toString():String Retorna a representação de string do objeto especificado.	Object
		valueOf():Object Retorna o valor primitivo do objeto especificado.	Object
		willTrigger(type:String):Boolean Verifica se um ouvinte de evento está registrado nesse objeto EventDispatcher ou em qualquer um de seus ancestrais para o tipo de evento especificado.	EventDispatcher

Métodos protegidos

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	Método		Definido por
		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

Eventos

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	Resumo	Definido por
activate	[transmissão de evento] Despachado quando o Flash Player ou o aplicativo do AIR ganha o foco do sistema operacional e está se tornando inativo.	EventDispatcher
containerChange	Dispatched when the element's container property changed.	MediaElement
deactivate	[transmissão de evento] Despachado quando o Flash Player ou o aplicativo do AIR perde o foco do sistema operacional e está se tornando inativo.	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

Detalhes do construtor

()

Construtor

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

Versão da linguagem:

ActionScript 3.0

Versão de produto:

OSMF 1.0

Versões de runtime:

Flash Player 10, AIR 1.5

Constructor.

Parâmetros

	`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.

Lança

ArgumentError — If resource is not an URLResource.

Exemplos Como usar este exemplo

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

Classes x

VideoElement