import { DataAmount, Duration } from 'data-unit';
/**
 * @hidden
 */
export declare const FFmpegProgressPattern: RegExp;
/**
 * @hidden
 */
export declare const FFmpegDurationPattern: RegExp;
/**
 * @category composable/executors
 */
export declare class FFmpegProgress {
    static parse(line: string): FFmpegProgress;
    percentage: number;
    duration: Duration;
    time: Duration;
    fps: number;
    size: DataAmount;
    bitrate: DataAmount;
    frame: number;
    speed: number;
    quantitizer: number;
    dup: number;
    drop: number;
    constructor(duration?: number | string | Duration);
    update(line: string): boolean;
    protected parseSize(size: number, unit: string): DataAmount;
    protected parseBitrate(size: number, unitStr: string): DataAmount;
    protected parseDuration(duration: string): Duration;
}