Regardless of editing, what 9-month old plays happily for 4 hours? My kid would cry if I left for more than 5 minutes!

LOL… I was thinking the same thing, Meredith. It looks like a parent was “close-by” but four hours is a LONG time. My niblet would be standing at the gate asking for a snack long before the end of the video.

Four hours?  What about napping?  Diaper?  Feeding?  Mine would also holler after at the most 20 minutes or so!

There is a note on the video that they edited the boring parent parts out to make the clip more amusing. Watch the start of the video and read the fine print.