The sound comes from GoPro action cameras, which became widely used in the 2010s for point of view sports, travel and underwater filming because of their small size and wide angle lens. The power on chime is part of the camera interface, giving users an audible confirmation that recording equipment is ready. As GoPro footage spread across YouTube and social media, viewers learned to associate the beeps with the start of an adventure clip. Editors now add the sound even to footage shot on other devices to borrow that ready to film feeling.