Accord位图区域已被锁定异常

如何解决Accord位图区域已被锁定异常

大家好，我正在使用Accord视频FFMPEG来捕获视频，但是我却遇到了这种异常，我是否可以知道为什么会发生这种异常以及如何克服这种情况

Bitmap region is already locked.,at System.Drawing.Bitmap.LockBits(Rectangle rect,ImageLockMode flags,PixelFormat format,BitmapData bitmapData)
   at System.Drawing.Bitmap.LockBits(Rectangle rect,PixelFormat format)
   at Accord.Video.FFMPEG.VideoFileWriter.WriteVideoFrame(Bitmap frame,UInt32 frameIndex)
   at Accord.Video.FFMPEG.VideoFileWriter.WriteVideoFrame(Bitmap frame,TimeSpan timestamp)
   at ProHance.PHProbeScreenCapture.VideoCapture.video_NewFrame(Object sender,NewFrameEventArgs eventArgs)

这是我将框架绑定到录像机的代码

Bitmap frame = eventArgs.Frame;
{
    Graphics graphics = Graphics.FromImage(frame);
    try
    {
        NativeMethods.CURSORINFO pci;
        pci.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(NativeMethods.CURSORINFO));
        if (NativeMethods.GetCursorInfo(out pci))
        {
            if (pci.flags == NativeMethods.CURSOR_SHOWING)
            {
                int x = pci.ptScreenPos.x - screenLeft;
                int y = pci.ptScreenPos.y - screenTop;

                Color c = Color.Yellow;
                float width = 2;
                int radius = 30;
                if ((Control.MouseButtons & MouseButtons.Left) != 0 || (Control.MouseButtons & MouseButtons.Right) != 0)
                {
                    c = Color.OrangeRed;
                    width = 4;
                    radius = 35;
                }
                Pen p = new Pen(c,width);

                graphics.DrawEllipse(p,x - radius / 2,y - radius / 2,radius,radius);
                NativeMethods.DrawIcon(graphics.GetHdc(),x,y,pci.hCursor);
                graphics.ReleaseHdc();
            }
        }
        this._writer.WriteVideoFrame(frame,(DateTime.Now - videoStartTime));
    }
    catch (Exception)
    {
        this._writer.WriteVideoFrame(eventArgs.Frame,(DateTime.Now - videoStartTime));
    }
}