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SourceBuffer.updating

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

Draft
This page is not complete.

The updating read-only property of the SourceBuffer interface indicates whether the SourceBuffer is currently being updated — i.e. whether an SourceBuffer.appendBuffer(), SourceBuffer.appendStream(), or SourceBuffer.remove() operation is currently in progress.

var isUpdating = sourceBuffer.updating;

TBD

Specification	Status	Comment
Media Source Extensions The definition of 'updating' in that specification.	Recommendation	Initial definition.

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	31 31 23 — 31 Prefixed Prefixed Requires the vendor prefix: -webkit-	12	42 42 25 — 42 Disabled Limited support to a whitelist of sites, for example YouTube, Netflix, and other popular streaming sites. The whitelist was removed when Media Source Extensions was enabled by default in Firefox 42. Disabled From version 25 until version 42 (exclusive): this feature is behind the `media.mediasource.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	11 11 Only works on Windows 8+.	15	8

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	4.4.3	?	Yes	No	30	No	?