yeah, you can't see his eyes to see if he has welders goggles or not! I can't imagine welding without them, not only will you damage your sight, but you can't see what your doing at all! Judging from the look of the corner weld, he just closes his eyes and hopes for the best! If he gets the rod to close to the metal, it will stick and get red hot almost instantly, he will have to let go fast! I still can't get over the non-insulated electrode clamp.
I wonder if that transformer is out of a welder (why it would be out of its housing is beyind me) or if its salvaged out of somthing else? It seems to actually produce a decent arc. I'd expect a better arc from the transformer itself from looking at it!