SourceBuffer: removeAsync() method

Note: This feature is available in Dedicated Web Workers.

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

Experimental: This is an experimental technology
Check 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

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.

Examples

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

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

Specifications

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

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`removeAsync` Experimental Non-standard	Chrome – No support Chrome footnote No support	Edge – No support Edge footnote No support	Firefox – No support Firefox 62 (Release date: 2018-09-05) disabled disabled From version 62 users must explicitly set the `media.mediasource.experimental.enabled` preference to `true`. To change preferences in Firefox, visit about:config.	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – No support Chrome Android footnote No support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – No support Opera Android footnote No support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – No support WebView Android footnote No support	WebView on iOS – No support WebView on iOS footnote No support

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No support: No support
: Experimental. Expect behavior to change in the future.
: Non-standard. Check cross-browser support before using.
: User must explicitly enable this feature.