Re: Video of Seichiro Endo Shihan
I think you need to keep in mind the purpose of the demonstration. If the purpose is for education, then the way the techniques are done will be different than in a dojo or real life situation. You will want to go slower and maybe stop or slow down even more to emphasize aspects of the technique.
Also keep in mind some of the people watching are very far away from the action in the upper seats not on the mat.