Сохранение изображения с веб-камеры без использования буфера обмена

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Windows.Forms;
 
namespace WebCam
{
    class WebCam
    {
        private int m_Width = 100;
        private int m_Height = 100;
        private int m_CapHwnd;
 
        public const int WM_USER = 1024;
 
        public const int WM_CAP_CONNECT = 1034;
        public const int WM_CAP_DISCONNECT = 1035;
        public const int WM_CAP_GT_FRAME = 1084;
        public const int WM_CAP_COPY = 1054;
 
        public const int WM_CAP_START = WM_USER;
 
        public const int WM_CAP_DLG_VIDEOFORMAT = WM_CAP_START + 41;
        public const int WM_CAP_DLG_VIDEOSOURCE = WM_CAP_START + 42;
        public const int WM_CAP_DLG_VIDEODISPLAY = WM_CAP_START + 43;
        public const int WM_CAP_GET_VIDEOFORMAT = WM_CAP_START + 44;
        public const int WM_CAP_SET_VIDEOFORMAT = WM_CAP_START + 45;
        public const int WM_CAP_DLG_VIDEOCOMPRESSION = WM_CAP_START + 46;
        public const int WM_CAP_SET_PREVIEW = WM_CAP_START + 50;
 
        [DllImport("user32", EntryPoint = "SendMessage")]
        public static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);
 
        [DllImport("avicap32.dll", EntryPoint = "capCreateCaptureWindowA")]
        public static extern int capCreateCaptureWindowA(string lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, int hwndParent, int nID);
 
        [DllImport("user32", EntryPoint = "OpenClipboard")]
        public static extern int OpenClipboard(int hWnd);
 
        [DllImport("user32", EntryPoint = "EmptyClipboard")]
        public static extern int EmptyClipboard();
 
        [DllImport("user32", EntryPoint = "CloseClipboard")]
        public static extern int CloseClipboard();
 
        [DllImport("user32.dll")]
        extern static IntPtr GetClipboardData(uint uFormat);
 
        public void Stop()
        {
            SendMessage(m_CapHwnd, WM_CAP_DISCONNECT, 0, 0);
            CloseClipboard();
        }
 
        public void Start(int ptr)
        {
            this.Stop();
            m_CapHwnd = capCreateCaptureWindowA("WebCap", 0, 0, 0, m_Width, m_Height, 0, 0);
            SendMessage(m_CapHwnd, WM_CAP_CONNECT, 0, 0);       
        }
 
        public byte[] GetFrame()
        {
            Clipboard.Clear();
            SendMessage(m_CapHwnd, WM_CAP_GT_FRAME, 0, 0);
            SendMessage(m_CapHwnd, WM_CAP_COPY, 0, 0);      
            return imageToByteArray(Clipboard.GetImage());
        }
 
        private byte[] imageToByteArray(System.Drawing.Image imageIn)
        {
            MemoryStream ms = new MemoryStream();
            imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
            return ms.ToArray();
        }
    }
}