Every month, 130 million people actively use Instagram. The service has seen 16 billion photos and gets a billion likes every single day. Say what you will about those silly filters, but Instagram is a monster in the world of photos. And now, they're hoping to do the same with videos.In a live event today, they let loose the fact that the service will now support 15-second videos. Recording works much like it does with Vine. You hold down your thumb on the button and it records as long as you're pressing. You keep doing that until you hit 15 seconds. You can also delete pieces of a clip, though, which is a nice addition.