There are 3 restarts at least in each video based on the last angle and approximately a 2 hour decay time for the pendulum release. The first control was done on Aug. 4 and the eclipse data was taken on Aug. 11. The beginning and final positions are superimposed in a short two frames of animation which loops. The last image shows that over 6 hours, the eclipse position is ahead of the control data. The marks shown radiating beneath the pendulum itself are hourly tick marks for ideal pendulum behavior.
Universal time is shown at lower right.
The thirty-minute image separation demonstrates that the floor is moving underneath the pendulum which always keeps its initial swing direction while the earth rotates. At this latitude, the rotation from right to left in the image is approximately 11.2 degrees per hour. In other words, this is not as it would appear to an observer since there are the two separate modes being superimposed in the same animation. It however does illustrate a lot of the issues involved in the pendulum discussions. Since this is outside the path of totality, it shows normal behavior, e.g. the rotation is as expected at around 9.3 degrees per hour.