I have used a HiLift jack to winch a stuck vehicle, 2 agonizingly slow feet at a time. This one makes that look like an efficient process, but I would gladly take an electric WARN over either option. That said, if you have nothing but a rope, this is an ingenious primitive contraption. I had never seen anything like it.
The speaker is not the most dynamic, so you might want to jump around. Seeing how the winch works is the important thing. It is a nifty technique to file away. You never know when it might come in handy.