/**
 * Path handling utilities
 */
/**
 * Normalize and validate output path
 * - Handles relative paths (resolves against OUTPUT_DIR or cwd)
 * - Ensures parent directory exists
 */
export declare function normalizeAndValidatePath(outputPath: string): Promise<string>;
/**
 * Generate unique file path to avoid overwrites
 * Adds counter suffix: video.mp4 -> video_1.mp4 -> video_2.mp4
 */
export declare function generateUniqueFilePath(filePath: string): Promise<string>;
/**
 * Get display-friendly path (relative if possible)
 */
export declare function getDisplayPath(filePath: string): string;
/**
 * Get video extension from path, default to 'mp4'
 */
export declare function getVideoExtension(outputPath: string): string;
/**
 * Ensure path has .mp4 extension
 */
export declare function ensureVideoExtension(outputPath: string): string;
/**
 * Generate default output path for a video
 */
export declare function generateDefaultOutputPath(prefix?: string): string;
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