export default class PluginExtension {
    constructor(opts: any, plugin: any);
    _opts: any;
    _plugin: any;
    _init(): void;
    _bindEvents(): void;
    _onLowDecode: () => void;
    /**
     * @param {string | undefined} url
     */
    _degrade: (url: string | undefined) => void;
    forceDegradeToVideo: (url: any) => void;
    destroy(): void;
}