/**
 * Demofly alignment — compare audio timestamps against video timing markers.
 *
 * Produces an alignment table (alignment.json) showing per-beat drift between
 * the narration audio and the recorded video. Used by the intelligent assembly
 * pipeline to generate edit proposals.
 */
import type { TimingData } from "./timing.js";
import type { TimestampsData } from "./timestamps.js";
export interface SyncPoint {
    phraseText: string;
    audioMs: number;
    videoMarker: string;
    videoMs: number;
}
export interface BeatAlignment {
    beatId: string;
    sceneId: string;
    audioDurationMs: number;
    videoDurationMs: number;
    driftMs: number;
    status: "aligned" | "needs_adjustment" | "critical";
    syncPoints: SyncPoint[];
}
export interface AlignmentData {
    beats: BeatAlignment[];
    summary: {
        totalBeats: number;
        aligned: number;
        needsAdjustment: number;
        critical: number;
        maxDriftMs: number;
    };
}
/**
 * Build alignment table from timestamps.json and timing.json.
 *
 * For each scene, compares the audio duration (from timestamps) against
 * the video scene duration (from timing markers). Produces per-beat drift
 * measurements and high-confidence sync points.
 */
export declare function buildAlignment(timestampsData: TimestampsData, timingData: TimingData): AlignmentData;
/**
 * Build alignment and write to recordings/alignment.json.
 */
export declare function buildAndWriteAlignment(projectDir: string): AlignmentData | null;
//# sourceMappingURL=alignment.d.ts.map