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

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:

"key"

The data is a key chunk.

"delta"

The data is not a key chunk.

timestamp

An integer representing the timestamp of the audio in microseconds.

duration

An integer representing the length of the audio in microseconds.

data

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

In the following example a new EncodedAudioChunk is created.

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