import { IClip } from '../types';
export declare function timeUsToUnits(timeUs: number, zoom?: number, playbackRate?: number): number;
export declare function unitsToTimeUs(units: number, zoom?: number, playbackRate?: number): number;
export declare function calculateTimelineWidth(totalLengthUs: number, zoom?: number): number;
export declare const getDuration: (trackItems: Record<string, IClip>) => number;
export declare const clipsToMap: (clips: IClip[]) => Record<string, IClip>;
export declare const splitClips: (clips: IClip[]) => {
    regular: IClip[];
    transitions: IClip[];
};