I have 1,000 x 15,000 pixel image (that is, a super tall scroll), and I would like to split the image in parts with dimensions of 1,000 x 2,000 pixels (the scroll cut up vertically in 8 pieces).
I tried to use the slice tool in Photoshop, like in the image below, and 'Divide Horizontally Into' 2000 pixel slices, but Photoshop (CS6 64 bit) won't go over 1,000px.
Something I thought of was slicing to 1,000px pieces and adding them together again with a batch job, but maybe there is some tool available which can slice 2000px parts?