export type VideoValidationState = 'unknown' | 'valid' | 'invalid' | 'validating';
interface CacheEntry {
    state: VideoValidationState;
    timestamp: number;
}
export interface VideoValidationConfig {
    cacheTTL?: number;
    headRequestTimeout?: number;
    videoElementTimeout?: number;
    verbose?: boolean;
}
export declare const validationCache: Map<string, CacheEntry>;
export declare function getCacheStats(): {
    size: number;
    entries: {
        url: string;
        state: VideoValidationState;
        age: number;
    }[];
};
export declare function clearValidationCache(): void;
export declare function cleanExpiredCache(ttl?: number): number;
export declare function validateVideoUrl(url: string, config?: VideoValidationConfig): Promise<VideoValidationState>;
export declare function validateVideoBatch(urls: string[], concurrency?: number, config?: VideoValidationConfig): Promise<Map<string, VideoValidationState>>;
export {};
//# sourceMappingURL=videoValidation.d.ts.map