Which is better, a documentary or a promotional film for graduation design?

Graduation design documentary and propaganda film have their own advantages and disadvantages. What kind of film you choose depends on your goals and interests.

1. Documentary: Documentary is a real and non-fictional film form, which focuses on the documentary nature of people, events, themes or phenomena. Shooting a documentary requires a lot of investigation and research to understand the background and characteristics of the object you want to shoot. In addition, it takes longer to shoot and edit documentaries, because it needs to capture the natural process and true feelings of events. If you are deeply interested in a subject or character and have enough time and resources to make a high-quality documentary, then this may be a good choice.

2. Promotional film: A promotional film is a film designed to promote or publicize a product, service or organization. It usually includes an introduction to the product or service, why the audience should care about the product or service, and some inspiring music and visual effects. The production time of the propaganda film is short, because it usually doesn't need a lot of investigation and research. In addition, the goal of promotional films is to influence the mood and behavior of the audience, so they are usually more convincing and attractive than documentaries. If you want to make a movie aimed at promoting or publicizing something in a limited time, then a promotional film may be a better choice.

No matter what kind of film you choose, the production process needs a lot of time and energy. If you need help in this area, I suggest you discuss your choice and the help and advice you need with your tutor or other professionals.