/** @hidden */
interface CaptionProperties {
    text?: string;
    start?: number;
    duration?: number;
    segments?: CaptionSegment[];
}
declare type CaptionSegment = {
    utf8: string;
    tOffsetMs?: number;
    acAsrConf: number;
};
/**
 * Represent a single video caption entry
 */
export declare class Caption implements CaptionProperties {
    /** caption content */
    text: string;
    /** caption start time in milliseconds */
    start: number;
    /** caption duration in milliseconds */
    duration: number;
    /** caption duration in milliseconds */
    segments: CaptionSegment[];
    /** @hidden */
    constructor(attr?: CaptionProperties);
    /** transcript end time in milliseconds */
    get end(): number;
}
export {};