/**
 * Video polling and download utilities
 */
import { type SoraVideoResponse, type VideoStatus } from '../types/tools.js';
/**
 * Progress callback type
 */
export type ProgressCallback = (status: VideoStatus, attempt: number, maxAttempts: number) => void;
/**
 * Poll for video generation result
 */
export declare function pollVideoResult(apiKey: string, videoId: string, pollInterval?: number, maxAttempts?: number, onProgress?: ProgressCallback): Promise<SoraVideoResponse>;
/**
 * Download video content from URL
 */
export declare function downloadVideo(url: string): Promise<Buffer>;
/**
 * Download video from API content endpoint
 */
export declare function downloadVideoFromApi(apiKey: string, videoId: string): Promise<Buffer>;
/**
 * Download and save video to file
 */
export declare function downloadAndSaveVideo(url: string, outputPath: string): Promise<void>;
/**
 * Download from API and save video to file
 */
export declare function downloadFromApiAndSave(apiKey: string, videoId: string, outputPath: string): Promise<void>;
/**
 * Validate video URL accessibility
 */
export declare function validateVideoUrl(url: string): Promise<boolean>;
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