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