Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The TrackDefaultList interface represents a simple container list for multiple TrackDefault objects.

The TrackDefaultList associated with a particular SourceBuffer can be retrieved using the SourceBuffer.trackDefaults property.

The individual TrackDefault objects can be accessed using the array operator [].



Constructs and returns a new TrackDefaultList object.


Inherits properties from its parent interface, EventTarget.

TrackDefaultList.length Read only

Returns the number of TrackDefault objects in the list.


Inherits properties from its parent interface, EventTarget.



Browser compatibility

BCD tables only load in the browser

See also