(1) YIDFF collects screening materials for preservation in the Yamagata Documentary Film Library (Hirakubo, Yamagata City;

(2) YIDFF also collects production and publicity materials, such as posters and dialogue lists, and preview DVDs. They are fully managed within the library and used for reference only for library visitors.

(3) YIDFF publishes the online catalog of the related documentaries on this website which is freely accessible from all over the world.