import { AsyncStream } from 'data-async-iterators';
import { Duration } from 'data-unit';
import { Executor } from './Executor';
import { Stream, ICompiler } from '../Compiler';
import { Class } from './Conversion';
import { FFmpegProcess } from '../Utils/FFmpegProcess';
import { Hook } from '../Utils/Hookable';
/**
 * @category composable/executors
 */
export interface Scene {
    start: number;
    end: number;
}
/**
 * @category composable/executors
 */
export interface BlackSceneOptions {
    minDuration?: number | Duration;
    pictureThreshold?: number;
    pixelRatioThreshold?: number;
}
/**
 * @category composable/executors
 */
export declare var BlackScenePattern: RegExp;
/**
 * @category composable/executors
 */
export declare class BlackSceneDetector extends Executor<AsyncStream<Scene>> {
    stream: Stream;
    compiler: ICompiler;
    options: BlackSceneOptions;
    constructor(stream: Stream, options?: BlackSceneOptions, compiler?: ICompiler);
    createProcess<T extends BlackSceneProcess>(factory: Class<T, [string[]]>): T;
    createProcess(): BlackSceneProcess;
    execute(): AsyncStream<Scene>;
}
/**
 * @category composable/executors
 */
export declare class BlackSceneProcess extends FFmpegProcess {
    onBlackScene: Hook<Scene>;
    processBlackSceneLine(line: string): void;
    setup(): void;
}