Octoprint time lapse on Z axis change

I printed a bunch of bulldog collars for a guy in Switzerland. This batch took about 8 hours to print on my Airwolf3d v5.5 printer.  Using my Octopi host controller, I took a time lapse video using the option to take a frame on each layer change rather than at timed intervals.  I hadn't tried this method before now, but I'll definitely do again because it looks so cool.  The result is a 10 second video where the printed parts appear to be rising up out of the print bed.