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EncodedAudioChunk: EncodedAudioChunk() constructor - Web APIs | MDN

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EncodedAudioChunk: EncodedAudioChunk() constructor

Limited availability

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

Note: This feature is available in Dedicated Web Workers.

The EncodedAudioChunk() constructor creates a new EncodedAudioChunk object representing a chunk of encoded audio.

In this article

Syntax

js

new EncodedAudioChunk(options)

Parameters

options

An object containing the following members:

type

Indicates if the chunk is a key chunk that does not rely on other frames for encoding. One of:

The data is a key chunk.

The data is not a key chunk.

An integer representing the timestamp of the audio in microseconds.

An integer representing the length of the audio in microseconds.

data

An ArrayBuffer, a TypedArray, or a DataView containing the audio data.

An array of ArrayBuffers that EncodedAudioChunk will detach and take ownership of. If the array contains the ArrayBuffer backing data, EncodedAudioChunk will use that buffer directly instead of copying from it.

Examples

In the following example a new EncodedAudioChunk is created.

js
const init = {
  type: "key",
  data: audioBuffer,
  timestamp: 23000000,
  duration: 2000000,
  transfer: [audioBuffer],
};
chunk = new EncodedAudioChunk(init);

Specifications

Specification

WebCodecs
# dom-encodedaudiochunk-encodedaudiochunk

Browser compatibility

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This page was last modified on Sep 11, 2024 by MDN contributors.

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