Hi Bushsnuffler
It is possible to tell hogs apart from black and white video. You need to be looking at the places which have different shades of darkness, ie. the face, ears, skirt and ‘skirt band’, etc. Any marks on the spines are potentially where someone has artificially marked the hogs, although it’s possible it’s a skin/spine problem – another reason why it’s a bad idea to artificially mark hogs as it can potentially cover up any such problems, or alternatively make it look as if there are such problems from a distance.
