The title of the promo has the following functions: 1. Make the finishing point. With the most exciting and infectious pictures, in a very short period of time, grasp the hearts of the audience and let the audience watch with the development of the promotional film. Second, the title creation is an important part of the tone establishment, theme expression and narrative mode of the promotional film. Third, for the audience, the title is the essence of the whole film, and it is also the key to judge the quality and attractiveness of the film.

To sum up, there are two methods at the beginning of the promotional film: one is the "straight to the point" method. This technique is mostly used in news and documentary videos; One is the artistic technique of "vivid images", which is widely used in freehand brushwork and artistic feature films.

The most common way to start a promotional film with a picture and a commentary is the most basic way to make the title. This opening form is suitable for summary special reports, such as positive reports on changes and achievements in economy, culture and life. The second is to expose problems, put forward ideas and dig up doubts.