export declare function useCameras(): {
    /** Readonly list (array) of available video input devices. */
    inputDevices: MediaDeviceInfo[];
    /** Select which input video device to use. */
    setPreferedDevice: (device?: MediaDeviceInfo) => void;
    /** The current video stream. */
    stream: MediaStream | undefined;
    /** Start a video stream from the default or prefered device. */
    restartStream: () => void;
};