Those are made from cobra knots and three strand braids, both are simple. I think he uses a separate cord for the cobra knots, with the ends of the braids (which are wrapped around the buckle instead of a hitch) tucked into it.
http://s28.postimg.org/hewh5a93v/P1060347.jpg here you can see the beginning of the cobra knot. The braid was made from a single piece of cord in this case, ends for the cobra knot left ~80cm long ended up 70-75 cm each after the braid was finished, resulting in 7.5 cm knot length for the cobra knot part (~1:20).
The braid itself consumed less cord than expected, maybe because I stretched it while braiding (mounted on a hook screw). Three cord lengths of 186 cm resulted in 180 cm knot length; the entire lanyard is 80 cm long.
On another note, these are marlinspikes made from birch and oak wood splinters:
http://s28.postimg.org/cuaaqcpej/P1060351n.jpg
They’re basically a must have for dressing and tightening knots. If a knot has already been tightened as much as possible it can be treated with hot water to tighten it some more; I haven’t tried this method myself since I get them tight enough as it is.