import type { ISOBMFFBox } from '../types'; /** Extract the timed AV1 samples from the first visual track in an AVIF sequence. */ export declare function getAvifTrack(data: Uint8Array, boxes: ISOBMFFBox[]): AvifTrack; export declare interface AvifTrackSample { data: Uint8Array duration: number sync: boolean } export declare interface AvifTrack { timescale: number duration: number samples: AvifTrackSample[] }