Video narration
An LED screen is basically a giant grid of tiny lights. LED stands for “light-emitting diode”—a small part that glows when electricity flows through it. Up close, the screen is made of thousands or millions of pixels, and each pixel is really a cluster of even smaller LEDs. Most full-color LED screens use three LEDs per pixel: red, green, and blue—RGB. By turning each one on or off, or dimming it to different levels, the pixel can mix those three colors into many shades, from bright white to deep purple. A picture is just the pattern of colors across all those pixels. Video is the same idea, but the pattern changes many times per second, so your eyes see smooth motion. And because the pixels emit their own light, LED screens can look very bright, even outdoors.