Meanderer, my father bought the pine lumber for the siding on our cabin in 1984 from a local man who had a sawmill very much like the one in your video. Never planed. Talk about splinters.
He used a board and batten pattern (wide boards with narrow ones covering the cracks). It turned out real pretty.
Here it is after 33 years. We never figured it would last this long. If you look closely you can see the saw marks. My parents stained it long ago with cherry stain. That is about gone now. I could make it pretty again with a little work. On my todo list. [yeah, right]