"anon mentioned this in a reply to my post in last bread..The timeseries in the right panel shows motion through the yellow line in 1 second intervals, 242 in total [4 minutes].
https://imagej.net/Generate_and_exploit_Kymographs
The motion appears to be periodic, with the lowest frequency being 3-4 peaks per 4 minutes."
of course they would use a tripod, or stand for a 4 min vid c'mon…he's on a boat, those are rolls, and he's "showing us" anons, not trying to hide it…