Genre

Genre is formed using conventions that make a theme, these conventions could be based on some set of stylistic criteria, audio and visual.
Examples
Romance
Action
Comedy
Romantic Comedy
Sci-fi
Blockbuster
Adventure (Wilderness
Horror (Streams, Shadows, Creepy Music, Volatile Weather, Silence to build suspense)


Film Trailer
Length- 2:30
Genre- Comedy
How do you know the genre?
I can tell the genre as it uses conventions such as funny noises, and funny situations.

Length- 2:40
Genre- Action
How do you know the genre?
I know the genre because the trailer uses weapons and fast paced music. The use of fast paced editing helps to understand the genre