Web/API/SourceBuffer/removeAsync

Non-standard This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The removeAsync() method of the SourceBuffer interface starts the process of asynchronously removing from the SourceBuffer media segments found within a specific time range. A Promise is returned, which is fulfilled when the buffers in the specified time range have been removed.

This method can only be called when updating is false. If that's not the case, call abort() instead.

Syntax

removePromise = sourceBuffer.removeAsync(start, end);

Parameters

start: A double representing the start of the time range, in seconds.
end: A double representing the end of the time range, in seconds.

Return value

A Promise whose fulfillment handler is executed once the buffers in the specified time range have been removed from the SourceBuffer.

Example

This example establishes an asynchronous function, emptySourceBuffer(), which simply clears the contents of the specified SourceBuffer.

async function emptySourceBuffer(msBuffer) {
  await msBuffer.removeAsync(0, Infinity).catch(function(e) {
    handleException(e);
  }
}

Specifications

Not currently part of the MSE specification.

Specification	Status	Comment
Media Source Extensions	Recommendation	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`removeAsync`	Chrome No support No	Edge No support No	Firefox Full support 62 Disabled' Full support 62 Disabled' Disabled' From version 62: this feature is behind the `media.mediasource.experimental.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera No support No	Safari No support No	WebView Android No support No	Chrome Android Full support Yes	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
User must explicitly enable this feature.': User must explicitly enable this feature.