import { Flow } from '../core/flow';
import { VoidCallback } from '../common-types';
export declare class CombineMp4sToMovFlow extends Flow {
    private _videoMp4Url;
    private _audioUrl;
    private _isMp3Audio;
    /**
     *
     * @param _videoMp4Url
     * @param _audioUrl
     * @param _appInputCallback
     * @param _useFileDownloadSocket
     * @param _downloadLinkContainer
     * @param _isMp3Audio
     */
    constructor(_videoMp4Url: string, _audioUrl: string, useFileDownloadSocket?: boolean, downloadLinkContainer?: HTMLElement, _isMp3Audio?: boolean);
    private _onWaitingToFlowing;
    protected onVoidToWaiting_(cb: VoidCallback): void;
    protected onWaitingToVoid_(cb: VoidCallback): void;
    protected onWaitingToFlowing_(cb: VoidCallback): void;
    protected onFlowingToWaiting_(cb: VoidCallback): void;
    protected onCompleted_(cb: VoidCallback): void;
    protected onStateChangeAborted_(reason: string): void;
}