Great video. I do a lot of "green" woodworking. A few books by mike abbot, about chair building use this process. Its also how Peter Follensbee makes his red oak boxes.
Having trees split nice and straight like that is a joy. I had a nice black cherry that I was making bowls and spoons from do that, but I have had others that are really wavy.
It was interesting seeing how sharp he keeps his froe, mine is sharp but not that sharp I may hit it with a diamond stone I have.
The wooden wedges are great, I use them in splitting crooks for spoons, and we had to have them when I took a bowl hewing/carving class with Beth Moen.