import type { AnalysisStreamOptions } from '../trajectory/analysis'; import type { TrajectoryRun } from '../trajectory'; import type { VacfInput } from './index'; export declare const VELOCITY_SITE_PROPERTY = "velocity"; export declare const suggest_vacf_frame_stride: (run: TrajectoryRun, max_bytes?: number) => number | null; export declare function collect_vacf_input(run: TrajectoryRun, options?: AnalysisStreamOptions): Promise;