These are from the Batto Embu & Taikai at Nakamura shrine in Moka - 真岡市中村八幡宮抜刀演舞大会 - very nice and quick cuts. You can see the cutting mats .. 7mats (end of video), iai kata in the pair etc.

Here is another video from the same enbu and you can see the cutting of bamboo and tatami.

and more: