Compositing is like playing with stickers. You know how you can put stickers on a piece of paper and make a really cool drawing? Compositing is kind of like that, but with pictures!
Let's say you have two pictures of a dog: one with a plain background and one with the dog wearing a hat. With compositing, you could take the dog from the picture with the hat and put it onto the background of the other picture.
This way, you can create new pictures that are made up of parts from different pictures. Maybe you want to put your friend's head on a picture of a superhero, or make it seem like your cat is flying through space – all of that is possible with compositing!
But it's not just about putting pictures together. You can also change the colors, lighting, and shadows to make the final picture look more realistic.
So, think of compositing as a way to create new pictures by putting together different parts of other pictures, and making them look like they belong together.