How to Cut Dovetail Joints by Hand

Thanks for posting the video. My comment is that he does all the required step very quickly, and as he has done it a lot, is accurate. I notice that he uses only about 3" of the middle section of the saw blade and his sawing motion is rather jerky(a separate issue from the video quality). One or two full length strokes with a quality saw like yours would get to the baseline in the same amount of time, or faster, and the less back and forth motion would be increase accuracy.
Of course, he probably went into overdrive to get all the information into a short video segment, but it gives the impression that sawing is a frantic activity when it really isn't.

quite possibly the worse dovetail video I have seen. following his collection of bad techniques will guarantee gappy dovetails. but man he sure has some nice tools. I really like the nice polished sides of his dovetail saw. and he uses a nice lignum mallet. he also has a nice chest of tools behind him.
technique wise, I don't know where to start with what he's doing wrong, but I guess anyone who has a camera can make a how to video, dosen't make him right.

The video shows what happens when you get fluency with your tools. Contrary to your speculation the result isn't "Gappy" and while his technique has no safely net the only real argument I would have with his method is:
He uses a rip saw to cut his shoulders and he gets a few splinters. I think the shoulder line should be chiseled first to create a crisp line.

Very obvious he has cut dovetails hundreds, if not thousands of times. I find the most interesting point where he utilizes a tail as the outside most portion of both edges of the board. I've always made my dovetails with pins encompassing the tails. Always good to know multiple ways of accomplishing a task. His way certainly has a different look than what I'm used to.

Hi,
Thanks for this video, skilfull craftsman, i would have one notice, as usual with this videos, the wood used is some of pine, which compress and make adustment easy, it's harder to make crisp dovtail on <hardwood, No?