GoPro action cameras play a short startup chime when they are powered on, a sound designed to confirm the camera is ready to record. Because millions of creators film surfing, cycling, skiing and travel with these cameras, the beeps have become closely associated with first-person adventure footage online. Editors often reuse the isolated chime at the start of their own clips, even when the original recording did not capture it, because viewers instantly recognise it as the moment an action sequence begins.