Originally Posted by Rob Helms
In Henry’s video it is so crystal clear that his bar line after about the first half dozen are no where near the down beat. He keeps saying “boom” for every bar but they are not a boom they are way off.
You're most probably correct, but it's worth remembering with videos like these that the process of making the video can cause some apparent skewing and other effects.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
.