EncodedVideoChunk: byteLength property

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 byteLength read-only property of the EncodedVideoChunk interface returns the length in bytes of the encoded video data.

Value

An integer.

Examples

In the following example the byteLength is printed to the console.

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

console.log(chunk.byteLength); // 352800

Specifications

Specification

WebCodecs
# dom-encodedvideochunk-bytelength

Browser compatibility

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This page was last modified on Apr 27, 2025 by MDN contributors.

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