import type { Nullable } from "../types";
import type { AbstractEngine } from "../Engines/abstractEngine";
/**
 * This represents the different options available for the video capture.
 */
export interface VideoRecorderOptions {
    /** The canvas you want to record */
    canvas?: HTMLCanvasElement;
    /** Defines the mime type of the video. */
    mimeType: string;
    /** Defines the FPS the video should be recorded at. */
    fps: number;
    /** Defines the chunk size for the recording data. */
    recordChunckSize: number;
    /** The audio tracks to attach to the recording. */
    audioTracks?: MediaStreamTrack[];
}
/**
 * This can help with recording videos from BabylonJS.
 * This is based on the available WebRTC functionalities of the browser.
 *
 * @see https://doc.babylonjs.com/features/featuresDeepDive/scene/renderToVideo
 */
export declare class VideoRecorder {
    private static readonly _DefaultOptions;
    /**
     * Returns whether or not the VideoRecorder is available in your browser.
     * @param engine Defines the Babylon Engine.
     * @param canvas Defines the canvas to record. If not provided, the engine canvas will be used.
     * @returns true if supported otherwise false.
     */
    static IsSupported(engine: AbstractEngine, canvas?: HTMLCanvasElement): boolean;
    private readonly _options;
    private _canvas;
    private _mediaRecorder;
    private _recordedChunks;
    private _fileName;
    private _resolve;
    private _reject;
    /**
     * True when a recording is already in progress.
     */
    get isRecording(): boolean;
    /**
     * Create a new VideoCapture object which can help converting what you see in Babylon to a video file.
     * @param engine Defines the BabylonJS Engine you wish to record.
     * @param options Defines options that can be used to customize the capture.
     */
    constructor(engine: AbstractEngine, options?: Partial<VideoRecorderOptions>);
    /**
     * Stops the current recording before the default capture timeout passed in the startRecording function.
     */
    stopRecording(): void;
    /**
     * Starts recording the canvas for a max duration specified in parameters.
     * @param fileName Defines the name of the file to be downloaded when the recording stop.
     * If null no automatic download will start and you can rely on the promise to get the data back.
     * @param maxDuration Defines the maximum recording time in seconds.
     * It defaults to 7 seconds. A value of zero will not stop automatically, you would need to call stopRecording manually.
     * @returns A promise callback at the end of the recording with the video data in Blob.
     */
    startRecording(fileName?: Nullable<string>, maxDuration?: number): Promise<Blob>;
    /**
     * Releases internal resources used during the recording.
     */
    dispose(): void;
    private _handleDataAvailable;
    private _handleError;
    private _handleStop;
}