/**
 * 视频截取器
 * 使用 ffmpeg 截取视频的一部分，保持原视频编码和质量
 */
interface CutVideoOptions {
    startTime?: string;
    duration?: string;
    endTime?: string;
    outputFileName?: string;
    outputFormat?: string;
    tempDir?: string;
    overwrite?: boolean;
}
interface CutVideoResult {
    outputPath: string;
    metadata: {
        originalDuration: number;
        cutDuration: number;
        startTime: string;
        endTime: string;
        fileSize: number;
        processingTime: number;
    };
}
export declare const cutVideo: (videoPath: string, options?: CutVideoOptions) => Promise<CutVideoResult>;
export declare const cutVideoByTimeRange: (videoPath: string, startTime: string, endTime: string, options?: Omit<CutVideoOptions, "startTime" | "endTime">) => Promise<CutVideoResult>;
export declare const cutVideoByDuration: (videoPath: string, startTime: string, duration: string, options?: Omit<CutVideoOptions, "startTime" | "duration">) => Promise<CutVideoResult>;
export declare const cutVideoFromStart: (videoPath: string, durationSeconds: number, options?: Omit<CutVideoOptions, "startTime" | "duration">) => Promise<CutVideoResult>;
export {};