VideoDecoder

Secure contextAvailable in workers

The VideoDecoder interface of the WebCodecs API decodes chunks of video.

Constructor

• VideoDecoder()
  • : Creates a new VideoDecoder object.

Instance properties

Inherits properties from its parent, EventTarget.

• decodeQueueSize Read only
  • : An integer representing the number of queued decode requests.
• state Read only
  • : Indicates the current state of decoder. Possible values are:
    • "unconfigured"
    • "configured"
    • "closed"

Events

• dequeue
  • : Fires to signal a decrease in decodeQueueSize.

Static methods

• VideoDecoder.isConfigSupported()
  • : Returns a promise indicating whether the provided VideoDecoderConfig is supported.

Instance methods

Inherits methods from its parent, EventTarget.

• configure()
  • : Enqueues a control message to configure the video decoder for decoding chunks.
• decode()
  • : Enqueues a control message to decode a given chunk of video.
• flush()
  • : Returns a promise that resolves once all pending messages in the queue have been completed.
• reset()
  • : Resets all states including configuration, control messages in the control message queue, and all pending callbacks.
• close()
  • : Ends all pending work and releases system resources.

Specifications

Browser compatibility

See also

• Video processing with WebCodecs
• WebCodecs API Samples