Page snippets with movie information can contain:
whether a movie is fit for family viewing;
release date in theaters;
year of release;
names of actors, directors, producers, composers;
name of film company.
Texts made up of the information listed above sometimes exceed the allowed snippet size. In that case the snippet includes only the most important information or the part of the text most relevant to the search query.
Structured snippets may not be displayed if there is text on the page that is more informative or relevant to the search query and therefore better suited as a snippet. All things being equal, preference is always given to structured snippets.
Mark your page using Schema.org to let the Yandex robot know which page fragments work as movie attributes. You can see the standard Movie schema supported by Yandex in the Movie Descriptions section.
No attributes are required, but the more information you give Yandex about a movie, the better chance there is that a structured snippet will be displayed in the search results.
Each page should list information about only one movie: in other words, the markups should only have one block, like at http://schema.org/Movie.