/** Where a reviewed clip's frames land. Gitignored, and outside the publish fingerprint. */
export declare function contactSheetPath(root: string, assetId: string): string;
export interface ClipReview {
    /** The written sheet, or null when no sheet could be made. */
    sheetPath: string | null;
    /** Whether the clip carries an audio track; null when it could not be determined. */
    hasAudioTrack: boolean | null;
    /** Why a step was skipped — printed as-is, one line each. Empty when everything worked. */
    notes: string[];
}
export type FetchLike = (url: string) => Promise<{
    ok: boolean;
    status: number;
    arrayBuffer(): Promise<ArrayBuffer>;
}>;
/**
 * Download the clip, tile frames from it, and report whether it has sound.
 *
 * The mp4 itself is deliberately not kept: it is several MB per generation, the URL is printed
 * beside the sheet, and the dev view plays the clip when a creator wants to watch it move.
 */
export declare function reviewGeneratedClip(options: {
    root: string;
    assetId: string;
    videoUrl: string;
    durationSeconds: number;
    fetch: FetchLike;
}): Promise<ClipReview>;