[Mike Taylor 3601]

By the video I don't believe it is driveshaft, I think you would see it on video when it happened,may be able to see on slow motion? I would think you would see moving during vibration,don't believe it is in the pinion angle changes or would have other spots in the run,because looks like angle changes are about the same,didn't notice a change when it vibrated.
In a way almost sounds like gear noise
Does this only happen at this one point during shutdown?
Mike Taylor 3601