TextTrack: sourceBuffer property

The read-only sourceBuffer property of the TextTrack interface returns the SourceBuffer that created the track, or null if the track was not created by a SourceBuffer or the SourceBuffer has been removed from the MediaSource.sourceBuffers attribute of its parent media source.

Value

A SourceBuffer or null.

Specifications

Specification
Media Source Extensions™
# dom-texttrack-sourcebuffer

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