VideoDecoder

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Dedicated Web Workers.

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

EventTarget VideoDecoder

Constructor

VideoDecoder()

Creates a new VideoDecoder object.

Instance properties

Inherits properties from its parent, EventTarget.

VideoDecoder.decodeQueueSize Read only

An integer representing the number of queued decode requests.

VideoDecoder.state Read only

Indicates the current state of decoder. Possible values are:

  • "unconfigured"
  • "configured"
  • "closed"

Events

dequeue

Fires to signal a decrease in VideoDecoder.decodeQueueSize.

Static methods

VideoDecoder.isConfigSupported()

Returns a promise indicating whether the provided VideoDecoderConfig is supported.

Instance methods

Inherits methods from its parent, EventTarget.

VideoDecoder.configure()

Enqueues a control message to configure the video decoder for decoding chunks.

VideoDecoder.decode()

Enqueues a control message to decode a given chunk of video.

VideoDecoder.flush()

Returns a promise that resolves once all pending messages in the queue have been completed.

VideoDecoder.reset()

Resets all states including configuration, control messages in the control message queue, and all pending callbacks.

VideoDecoder.close()

Ends all pending work and releases system resources.

Specifications

Specification
WebCodecs
# videodecoder-interface

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
VideoDecoder
VideoDecoder() constructor
close
configure
decode
decodeQueueSize
dequeue event
flush
isConfigSupported() static method
reset
state

See also