import { DownloadConfig } from './schema/DownloadConfig.js';
import { DownloadResult } from './schema/DownloadResult.js';
import { VideoMetadata } from './schema/VideoMetadata.js';
/**
 * Abstract contract for video download providers.
 * Concrete implementations handle platform-specific logic.
 */
export declare abstract class DownloadProvider {
    abstract readonly name: string;
    /**
     * Download video from URL.
     */
    abstract download(url: string, config: DownloadConfig): Promise<DownloadResult>;
    /**
     * Extract metadata without downloading video.
     */
    abstract extractMetadata(url: string): Promise<VideoMetadata>;
    /**
     * Check if URL is supported by this provider.
     */
    abstract isSupported(url: string): Promise<boolean>;
}