import { TraceStep } from "./extract-steps";
export type ExtractedScreenshot = {
    sha1: string;
    timestamp: number;
    width: number;
    height: number;
    base64: string;
};
export declare function extractScreenshotsAroundStep(opts: {
    zipUrl: string;
    stepId: string;
    beforeMs?: number;
    afterMs?: number;
    maxScreenshots?: number;
}): Promise<{
    step: TraceStep | undefined;
    screenshots: ExtractedScreenshot[];
}>;
export declare function extractScreenshotsInRange(opts: {
    zipUrl: string;
    startTime: number;
    endTime: number;
    maxScreenshots?: number;
}): Promise<ExtractedScreenshot[]>;
export declare function parseTimeToMs(timeStr: string): number;
export declare function saveScreenshotsToDir(screenshots: ExtractedScreenshot[], outputDir: string, stepId: string): Promise<string[]>;
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