Good video. I actually mended a couple of hoses yesterday, I'll have to go back and use the duct tape idea.
Since I detest leaky hose ends I put an o-ring on the part that fits inside the hose and position it so it will be on the hose end of the clamp. I use a heat gun to embiggen the hose and slide the brass piece and o-ring all the way in, then position and tighten the clamp.