Yup, same issue here, isn't the video somewhere on a decent site?
And looking at the comments part of the video appears to be lighting a 800-1200W light to prove his point, with people pointing out that even though the light gives some light, it's obviously not running at 1kW in the tests since it doesn't produce anywhere near enough light for that, but at way lower power it'll already produce some light, so he should just measure the actual power instead of being like "look, this kW light is giving light so i'm producing 1 kW"