There are many special effects used in editing software, but to know how these special effects are used to help you edit, I will briefly talk about them. In the transformation of focal plane, different optical techniques and techniques are often used to achieve the purpose of editing films. This paper introduces some common optical skills of film editing.

First, cut in and cut out

This is one of the most commonly used shot switching methods in movies. That is, the transition from the end of the previous shot to the beginning of the next shot, without any gap. It's called cutting

Second, fade out and fade in

Also known as the fade-in and fade-out of movie pictures. The picture gradually darkened and finally disappeared completely. This method is called fading out or fading out. On the contrary, the picture gradually turns from dark to bright, and finally it is completely clear. This shot is called fade in, also called fade in.

Third, pull in and pull out

It is also a skill to change the lens of a movie. Sometimes a clear straight line and sometimes a wavy line are used to erase the picture straight, horizontally and obliquely from the edge of the picture, which is called drawing. Change it to the picture below, which is called demarcation.

Fourth, turn out and turn in.

Also known as dissolution, dissolution, is also a technique of lens conversion in movies. One picture gradually disappears (melts out) and another picture gradually emerges (melts in). This is often used in two interrelated contents and scenes before and after, resulting in a feeling of slow transition.

V. Overprinting

Refers to two or even three pictures superimposed and printed into one picture. Often show the characters' memories, dreams, illusory imagination, magical world, etc.

Six, other optical skills

The focus becomes empty.

The focus of several frames in the picture becomes blurred and the image gradually blurs. The speed and length of blurring can be freely mastered, which often shows scenes such as blurred vision and coma of the people in the play.

Freeze-frame: often refers to a dynamic lens that is instantly still on a certain picture, and the picture looks very rough. Reverse printing: normal shots are printed in the reverse order of action.

Split a picture: Use a mask to split a picture into two, three or more pictures.

Masking: when an actor plays two roles on the same screen at the same time, one side is masked first, the other side is exposed first, and then the masking and exposure are changed.

There are no books about editing now, but there are books about the use of editing software, but the books will not say how to express the content and form of movies through editing. All these should be summarized in practice.