SourceBuffer: appendBufferAsync() method

The appendBufferAsync() method of the SourceBuffer interface begins the process of asynchronously appending media segment data from an ArrayBuffer, a TypedArray or a DataView object to the SourceBuffer object. It returns a Promise which is fulfilled once the buffer has been appended.

Syntax

appendBufferAsync(source)

Parameters

source

Either an ArrayBuffer, a TypedArray or a DataView object that contains the media segment data you want to add to the SourceBuffer.

Return value

A Promise which is fulfilled when the buffer has been added successfully to the SourceBuffer object, or null, if the request could not be initiated.

Examples

This simplified example async function, fillSourceBuffer(), takes as input parameters buffer, an ArrayBuffer, a TypedArray, or a DataView, and a SourceBuffer object to which to append the source media from the buffer.

async function fillSourceBuffer(buffer, msBuffer) {
  try {
    while (true) {
      await msBuffer.appendBufferAsync(buffer);
    }
  } catch (e) {
    handleException(e);
  }
}

Specifications

This feature is not part of any specification. It is not on track to become a standard.

Browser compatibility

See also

• Media Source Extensions API
• SourceBuffer.appendBuffer()
• MediaSource
• SourceBufferList