The photographer’s wife gives the back story:
My husband, Scott Miller, shot this video with a Canon 60d Camera using a Pixel TW-282/E3 Wireless remote timer set at 20 second intervals. He shot 1600 pictures from 7:00am until 5:00pm and compressed the 10 hours into 3 minutes and 30 seconds. He even took the day off work to help.
Not a bad little barn-raisin’ tune to go with the footage. Hat-tip to Fran for the link.