a macroblock is a chunk of an image which is identified to have some constancy between frames. a sub-macroblock would be some subdivision of this for finer moti

a macroblock is a chunk of an image which is identified to have some constancy between frames. a sub-macroblock would be some subdivision of this for finer motion details. sub-Macroblock partitian scanning would be applying an algorithm to identify the sub-macroblocks in a set of images. Add the word "Inverse" though and now I have no idea what the hell that means.