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AudioEncoder

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The AudioEncoder interface of the WebCodecs API encodes AudioData objects.

Constructor

AudioEncoder(): Creates a new AudioEncoder object.

Instance properties

Inherits properties from its parent, EventTarget.

AudioEncoder.encodeQueueSize Read only: An integer representing the number of encode queue requests.
AudioEncoder.state Read only: Represents the state of the underlying codec and whether it is configured for encoding.

Static methods

AudioEncoder.isConfigSupported(): Returns a promise indicating whether the provided AudioEncoderConfig is supported.

Instance methods

Inherits methods from its parent, EventTarget.

AudioEncoder.configure(): Enqueues a control message to configure the audio encoder for encoding chunks.
AudioEncoder.encode(): Enqueues a control message to encode a given AudioData objects.
AudioEncoder.flush(): Returns a promise that resolves once all pending messages in the queue have been completed.
AudioEncoder.reset(): Resets all states including configuration, control messages in the control message queue, and all pending callbacks.
AudioEncoder.close(): Ends all pending work and releases system resources.

Events

dequeue: Fires to signal a decrease in AudioEncoder.encodeQueueSize.

Specifications

Specification
WebCodecs # audioencoder-interface

Browser compatibility

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This page was last modified on Nov 10, 2026 by MDN contributors.

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