I Tied this style of Double Slipknot used in video & Pictured here on Right

Both pictured are double slipknots for comparison. Left one is just basics 2 loops formed in middle of a rope then crossing right loop over left loop & tucking it up through from the bottom. The other pictured here on the right is tied differently & slides more freely
Anybody know the name of the double slipknot on the right & used in the video clip