export declare function saveImage(url: string): Promise<string | null>;
export declare function removeImage(imgPath: string): void;
export declare function saveVideo(url: string): Promise<string | null>;
export declare function removeVideo(videoPath: string): void;
export declare function getVideoType(url: string): 'youtube' | 'tiktok' | 'facebook' | 'direct' | 'unknown';
export declare function downloadVideoFromPlatform(url: string): Promise<string | null>;
export declare function generateThumbnail(videoPath: string): Promise<string | null>;
export declare function getVideoInfo(videoPath: string): Promise<{
    duration: number;
    width: number;
    height: number;
} | null>;
export declare function getFileNameFromUrl(url: string): string;