Hi, i am using the CAVIGenerator (CodeProject code) class to record AVIs and i use a bitmap info header to set it up, however it crashes. So, what do i miss: BITMAPINFOHEADER bmpInfo; bmpInfo.biSize=sizeof(BITMAPINFOHEADER); bmpInfo.biWidth=m_WindowWidth; bmpInfo.biHeight=m_WindowHeight; bmpInfo.biPlanes=1; bmpInfo.biBitCount=24; bmpInfo.biSizeImage=m_WindowWidth*m_WindowHeight*3; bmpInfo.biCompression=BI_RGB; m_render_avi=CAVIGenerator("test.avi",&bmpInfo,m_render_fps); hr=m_render_avi.InitEngine(); After the dialog called by InitEngine the program crashes (after doing some things for a real long time (the comp is busy, and eventually it crashes). I get access violation in msvcrt.dll . Is there somthing i forgot or is there a way to get a CView* variable out of an MFC child view (like in my case COpenGLView). I tried (CView *)&COpenGLView but that also resulted in a crash. Thanks in advance.