Bright red/orange/yellow triangle with rounded bottom, silent, fast, no smoke or haze

A bright red/orange/yellow object passed overhead suddenly and completely vanished, didn’t fade away, no smoke or haze, absolutely no sound. The object was lower than any plane that has crossed overhead. 2 days later we set up a camera and captured a triangle of bright lights (see attached video) and 7 days later we captured the next video (same location).
First video is likely a spiderweb floating by,