"My biggest dream is to be in a film, so it's fun to try to make a film," says Elsa Zimmergren, 12, who participated in the film marathon competition Filmjam.

In the video, you get to follow Elsa and her friends as they shoot their short film.

The task was to come up with a story for a short film, choose props, film and edit in 4.5 hours. A jury then looked at the entries and the winners were awarded.

"It's quite tight time frames," says Yvonne Olofsson, media educator at Cnema, which organizes Filmjam.

Film jam is one of the activities at the children's film festival Watch a movie at the Cnema cinema in Norrköping. During the autumn holidays, activities are arranged and films are shown for children and young people.