public void CropAll()
 {
     for (int i = 0; i <= vidProvider.Total; i++)
     {
         var fname = vidProvider.GetPath(i);
         Console.WriteLine("Converting " + fname);
         var src = CvInvoke.Imread(fname);
         var dst = new Mat(src, new System.Drawing.Rectangle(420, 0, 1500 - 420, src.Height));
         CvInvoke.Imwrite(fname, dst);
     }
 }
 BitmapImage GetImageAt(VideoProvider provider, int i)
 {
     return(new BitmapImage(new Uri("file://" + provider.GetPath(i))));
 }