Slicing Lumber from the Cant

What happens here

After the log is squared (canted) and the blade is sharp, begin slicing the timber. Set the sawmill to cut 1-inch thick boards. Continue making passes, removing one board at a time. The video shows cutting two pieces of 4x4 lumber from the cant, and then proceeds to cut several 1-inch thick boards. These boards will later be processed into 6-inch boards and 3-inch battens for siding.

Goal: Produce finished lumber (4x4s, 1-inch boards) from the squared log.