TextTrackCues represent a string of text that will be displayed for some duration of time on a TextTrack. This includes the start and end times that the cue will be displayed. A TextTrackCue cannot be used directly, instead one of the derived types (e.g. VTTCue) must be used.

TextTrackCueList

external class TextTrackCueList : ArrayLike<TextTrackCue> , JsIterable<TextTrackCue>

MDN Reference

TextTrackKind

sealed external interface TextTrackKind

TextTrackList

external class TextTrackList : EventTarget, ArrayLike<TextTrack> , JsIterable<TextTrack>

MDN Reference

TextTrackMode

sealed external interface TextTrackMode

TrackEvent

open external class TrackEvent(val type: EventType<TrackEvent>, init: TrackEventInit = definedExternally) : Event

The TrackEvent interface, part of the HTML DOM specification, is used for events which represent changes to the set of available tracks on an HTML media element; these events are addtrack and removetrack.

TrackEventInit

external interface TrackEventInit : EventInit

VTTCue

open external class VTTCue(startTime: Double, endTime: Double, text: String) : TextTrackCue

MDN Reference

VTTRegion

open external class VTTRegion

MDN Reference