That the post is 5' tall isn't very helpful given that the post is some distance behind the hog and the camera shot is from an angle lower that the hog. It makes it look like the hog is much bigger than it actually is - forced perspective. It looks to be a good-sized hog, but using the post for perspective isn't a good comparison for scale.
"If you look through your scope and see your shoe, aim higher." -- said to me by my 11 year old daughter before going out for hogs 8/13/2011
My Hunting Videos https://www.youtube.com/user/HornHillRange