Brickfilm is when people use small plastic bricks to make movies. It's like playing with toy blocks, but the blocks are used to make a video. Instead of moving the blocks around with your hands, you take a bunch of pictures of the blocks and move them just a little bit each time. Then, you put all the pictures together to make a movie. It's kind of like flipbooks, but with blocks! People use different sizes and shapes of blocks to build all kinds of things like houses, cars, and even people. It takes a lot of time and patience to make a brickfilm, but it's a fun and creative way to make your own movies.