Anyone any good ideas how to achieve a pixel accurate output on SDI?

Output setup will be:

Catalyst DVI Out (800 x 600 75Hz)

to Folsom ImagePro SDI

from here via SD-SDI to LED-Wall.

My Problem is that the 800 x 600 output will be scaled down to 768 x 576 with matching centers.

If my content moves by 1 pixel it will move less than one pixel on the LED-wall - that means I will get a pixel interpolation (2 pixel active at some percentage of original brightness)

What I will try to do is to scale the image on the ImagePro up and only use the top/left 768x576 pixel of my 800x600 input.
This will require quite alot of manual setup on the ImagePro but should work in theory...

Anyone any better solutions ?

Why pixel accuracy? On LED walls you will achieve better edge contrast and smoother slow movements.

Olli