Click 'saxofoonwinkel' in the top menu and then 'Film' in the dropdown menu. The Yamaha link is also there and a clip with Charlie Parker and one with Miles Davis.
I find it interesting that keilwerth is still hand drawing their tube toneholes (making the tonehole chimneys). Even Selmer Paris, if i recall correctly, have it machine drawn.
(i didn't see the entire video, just portions of it)