The video is also on
Mark Hennebury's site, and my understanding is that it was there for a while, although it's not obvious from the home page that the video is there. Bill and Steve did the legwork to figure out that Kato and Kawai were working on this subject, and got copies of their papers and a high quality version of the video. Mia Iwasaki did the translation of the audio. Bill sent me the video and Mia's translation, and I edited it into an
English subtitled version. And as Bill mentioned, this was all worth the effort if for no other reason that the video is hosted in another location on the internet that is more easily accessible, and it won't be lost again.
This version of the video has had over 7,300 views since the subtitling. That's not a bad outreach for a somewhat esoteric woodworking subject. Without knowing the metrics, I'd guess that this is a lot more traffic than the original releases of the video either on the University Yamagata website or on Mark's website.