SourceBufferList: length property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

See full compatibility

Note: This feature is available in Dedicated Web Workers.

The length read-only property of the SourceBufferList interface returns the number of SourceBuffer objects in the list.

Value

An unsigned long number.

Examples

TBD

Specifications

Specification
Media Source Extensions™ # dom-sourcebufferlist-length

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
`length`	Chrome – Full support Chrome 23 (Release date: 2012-11-06) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 42 (Release date: 2015-11-03) footnote Full support	Opera – Full support Opera 15 (Release date: 2013-07-02) footnote Full support	Safari – Full support Safari 8 (Release date: 2014-10-16) footnote Full support	Chrome Android – Full support Chrome Android 33 (Release date: 2014-02-26) footnote Full support	Firefox for Android – Full support Firefox for Android 41 (Release date: 2015-09-22) footnote Full support	Opera Android – Full support Opera Android 14 (Release date: 2013-05-21) footnote Full support	Safari on iOS – Partial support Safari on iOS 13 (Release date: 2019-09-19) footnote Partial support footnote Exposed in Mobile Safari on iPad but not on iPhone.	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 4.4.3 (Release date: 2014-06-02) footnote Full support	WebView on iOS – Partial support WebView on iOS 13 (Release date: 2019-09-19) footnote Partial support footnote Exposed in Mobile Safari on iPad but not on iPhone.
Available in workers Experimental	Chrome – Full support Chrome 108 (Release date: 2022-11-29) footnote Full support	Edge – Full support Edge 108 (Release date: 2022-12-05) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 94 (Release date: 2022-12-15) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 108 (Release date: 2022-11-29) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 73 (Release date: 2023-01-17) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 21 (Release date: 2023-05-19) footnote Full support	WebView Android – Full support WebView Android 108 (Release date: 2022-11-29) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
Partial support: Partial support
No support: No support
: Experimental. Expect behavior to change in the future.

SourceBufferList: length property

Value

Examples

Specifications

Browser compatibility

Legend

See also