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

VideoDecoder()

Creates a new VideoDecoder object.

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"

dequeue

Fires to signal a decrease in VideoDecoder.decodeQueueSize.

VideoDecoder.isConfigSupported()

Returns a promise indicating whether the provided VideoDecoderConfig is supported.

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.

• Video processing with WebCodecs
• WebCodecs API Samples