Off topic, but why is the demo video so much brighter than the surrounding background? The page has a white background, but the video is substantially brighter.
Most likely the video was recorded with an iPhone. Playing it on an Apple device then automatically turns on some sort of an HDR mode and unlocks higher brightness - commonly seen while scrolling through reddit videos and other social media.
Ah I see. Yeah definitely filmed on an iPhone (with a cardboard box and a cutting board as a camera stand)
Apple devices render HDR content at higher brightness. It's actually quite interesting - see [0] and [1] for an intentional use of this!