export interface AudioTrack {
    enabled: boolean;
    readonly id: string;
    kind: string;
    readonly label: string;
    language: string;
    readonly sourceBuffer: SourceBuffer | null;
}
export interface AudioTrackListEventMap {
    addtrack: TrackEvent;
    change: Event;
    removetrack: TrackEvent;
}
/** Used to represent a list of the audio tracks contained within a given HTML media element, with each track represented by a separate AudioTrack object in the list. */
export interface AudioTrackList extends EventTarget {
    readonly length: number;
    onaddtrack: ((this: AudioTrackList, ev: TrackEvent) => any) | null;
    onchange: ((this: AudioTrackList, ev: Event) => any) | null;
    onremovetrack: ((this: AudioTrackList, ev: TrackEvent) => any) | null;
    getTrackById(id: string): AudioTrack | null;
    item(index: number): AudioTrack;
    addEventListener<K extends keyof AudioTrackListEventMap>(type: K, listener: (this: AudioTrackList, ev: AudioTrackListEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
    addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
    removeEventListener<K extends keyof AudioTrackListEventMap>(type: K, listener: (this: AudioTrackList, ev: AudioTrackListEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
    removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
    [index: number]: AudioTrack;
}
/** A single video track from a <video> element. */
export interface VideoTrack {
    readonly id: string;
    kind: string;
    readonly label: string;
    language: string;
    selected: boolean;
    readonly sourceBuffer: SourceBuffer | null;
}
export interface VideoTrackListEventMap {
    addtrack: TrackEvent;
    change: Event;
    removetrack: TrackEvent;
}
/** Used to represent a list of the video tracks contained within a <video> element, with each track represented by a separate VideoTrack object in the list. */
export interface VideoTrackList extends EventTarget {
    readonly length: number;
    onaddtrack: ((this: VideoTrackList, ev: TrackEvent) => any) | null;
    onchange: ((this: VideoTrackList, ev: Event) => any) | null;
    onremovetrack: ((this: VideoTrackList, ev: TrackEvent) => any) | null;
    readonly selectedIndex: number;
    getTrackById(id: string): VideoTrack | null;
    item(index: number): VideoTrack;
    addEventListener<K extends keyof VideoTrackListEventMap>(type: K, listener: (this: VideoTrackList, ev: VideoTrackListEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
    addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
    removeEventListener<K extends keyof VideoTrackListEventMap>(type: K, listener: (this: VideoTrackList, ev: VideoTrackListEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
    removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
    [index: number]: VideoTrack;
}