import { File } from "../file.js";
import { ReadStyle } from "../toolkit/types.js";
import type { IOStream } from "../toolkit/ioStream.js";
import { PropertyMap } from "../toolkit/propertyMap.js";
import type { VariantMap } from "../toolkit/variant.js";
import { Mp4Tag } from "./mp4Tag.js";
import { Mp4Properties } from "./mp4Properties.js";
export declare class Mp4File extends File {
    private _atoms;
    private _tag;
    private _properties;
    private constructor();
    static open(stream: IOStream, readProperties?: boolean, readStyle?: ReadStyle): Promise<Mp4File>;
    tag(): Mp4Tag | null;
    audioProperties(): Mp4Properties | null;
    save(): Promise<boolean>;
    hasMP4Tag(): boolean;
    static isSupported(stream: IOStream): Promise<boolean>;
    properties(): PropertyMap;
    setProperties(properties: PropertyMap): PropertyMap;
    removeUnsupportedProperties(properties: string[]): void;
    complexPropertyKeys(): string[];
    complexProperties(key: string): VariantMap[];
    setComplexProperties(key: string, value: VariantMap[]): boolean;
    private read;
}
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