Crop is fro cropping (i.e. cutting) the picture to get a smaller one.
The values are : Crop(x,y,width,height).
(X,Y) are the coordinates of the upper/left corner of the rectangle you want to cut. (width,height) are the dimensions of this rectangle.
Now, if you have a picture that is (100,100) pixels, you can't crop it with (20,20,90,90) because if you start yo cut at the point (20,20) you only have 80 pixels that left on the right, and the same under the cutting point. Do you understand ?
Imagine you are cutting a piece of paper with a blade. You will see that you can't enlarge the piece of paper
In other words, the value you used (28,80,672,416) aren't compatible with the actual size of your picture. To be valid, the source must be at least (28+672,80+416) pixels. That is a minimal resolution of the source of (700,496). DO you have this ? I don't think so.
Note that in the bicubic line, the 4 last parameters are in fact a cropping.
So "BicubicResize(512, 352, 1/3, 1/3, 11, 0, 698, 480)" is equivalent to "Crop(11, 0, 698, 480).BicubicResize(512, 352, 1/3, 1/3)".