import { TranscriptSegment } from './types/youtube-types.js';
export interface Json3CaptionEvent {
    tStartMs?: number;
    dDurationMs?: number;
    segs?: Array<{
        utf8?: string;
    }>;
}
export interface Json3CaptionResponse {
    events?: Json3CaptionEvent[];
}
export declare function parseJson3Transcript(data: Json3CaptionResponse): TranscriptSegment[];