import { VideoEngine } from '../core/VideoEngine';
import { QualityLevel } from '../core/types';
export declare class GStreamerEngine extends VideoEngine {
    processChunk(inputPath: string, outputPath: string, startTime: number, quality: QualityLevel): Promise<void>;
    extractScreenshot(inputPath: string, outputPath: string, time: number): Promise<void>;
    getDuration(inputPath: string): Promise<number>;
}