//Liefert ab einem best. Frame Rückgabewert 0
  int dib = Avi.AVIStreamGetFrame(getFrameObject, firstFrame + position); 
  bih.bmiColors = this.palette;           
  bih.bmiHeader = (Avi.BITMAPINFOHEADER)Marshal.PtrToStructure(new _ IntPtr( _
    dib),bih.bmiHeader.GetType());