TrackDefault

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 TrackDefault interface provides a SourceBuffer with kind, label, and language information for tracks that do not contain this information in the initialization segments of a media chunk.

A TrackDefault object is provided to a SourceBuffer object by setting its SourceBuffer.trackDefaults property.

Constructor

TrackDefault(): Constructs and returns a new TrackDefault object.

Properties

TrackDefault.type Read only: Returns the type of track that this SourceBuffer's media segment data relates to (i.e. audio, video, or text track.)
TrackDefault.byteStreamTrackID Read only: Returns the ID of the specific track that the SourceBuffer should apply to.
TrackDefault.language Read only: Returns the default language to use when an initialization segment does not contain language information for a new track.
TrackDefault.label Read only: Returns the default label to use when an initialization segment does not contain label information for a new track.
TrackDefault.kinds Read only: Returns the default kinds used when an initialization segment does not contain kind information for a new track.

Browser compatibility

BCD tables only load in the browser