SourceBufferList: indexed property getter

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

The indexed property getter of the SourceBufferList interface allows the SourceBuffer objects in the list to be accessed with an array operator (i.e. [].)


var mySourceBuffer = sourceBufferList[index];


The index position of the SourceBuffer object you want to return.

Return value

A SourceBuffer object.


No specific exceptions are thrown, but if the supplied index is great than or equal to SourceBufferList.length, the operation will return undefined.




Specification Status Comment
Media Source Extensions
The definition of 'SourceBuffer() getter' in that specification.
Recommendation Initial definition.

Browser compatibility

ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Chrome Full support 45Edge Full support 12Firefox Full support 42
Full support 42
No support 25 — 42
Notes Disabled
Notes Limited support to an allowed list of sites, for example YouTube, Netflix, and other popular streaming sites. The limitation 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. To change preferences in Firefox, visit about:config.
IE Full support 11
Full support 11
Notes Only works on Windows 8+.
Opera Full support 32Safari Full support 8WebView Android Full support 45Chrome Android Full support 45Firefox Android No support NoOpera Android Full support 32Safari iOS No support NoSamsung Internet Android Full support 5.0


Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also