What is the use of the board used before each scene when filming a movie?

Movie clapperboard. The black and white is so beautiful that it can be used as a work of art. The English name is slate, and information such as the scene, shot, director, film title, film company, etc. are written in chalk on it. There is a clapper attached to the upper edge, and one end can be opened and closed to make a crisp sound. The main function of the slate is to mark each piece of film shot for easy identification during later editing.

We know that movies are composed of many shots. Each film generally has hundreds or even thousands of shots. The scenes and content in the film are very complex. When filming, it is impossible to follow the order of the plot, but to shoot according to the scene. For example, shoot the outdoor scene first, then shoot the scene in the studio, or shoot the summer scene first, and then the winter scene. Even if it is also a winter scene, Some plots happen early in the story, and some plots happen later. In order to ensure quality, some shots have to be shot several times. After working hard for several months and bringing back a lot of film, how do you put it together into a complete movie? If there are no obvious marks on the film, it will cause trouble in the later editing work.

Film workers have figured out a good way through long-term practice. They use a small board with black and white stripes. On the board, the relevant content of the film that will be shot below is briefly written. Take this "board" before each shot as a mark of the shot. This step is called "making the decision" or "beating the board" in the jargon of the film industry. In this way, there is a slate shot at the beginning of each piece of film. During post-production, as soon as the staff sees this mark, they will know which movie this piece of film is, which scene and which shot. This is very good. Identify. In addition, other staff such as costumes, makeup, props, etc. can also use this to avoid defects in details of shots taken at different times, thereby avoiding mistakes.

Since the purpose of the slate is to mark, why do you need to bang it? This is because movies not only have images but also sound. If the character's voice and mouth shape are inconsistent when speaking in a movie, then you will feel very awkward while watching the movie. When filming a movie, the scribe lifts up the clapper board and snaps the wooden strips on the clapper board together, making a crisp sound. The photographer records the knocking sound and the scribe lens at the same time, and this sound becomes the post-production recording. Synchronization marks allow editors to determine accurate sound and image positioning.