Genre theory

Audiences have all have different tastes when comes to movies and TV shows and one of the things that people most appeal when comes to these would be genre. Depending on the genre of a movie or a TV show people will either like or dislike it simply by it's genre. The reason for this would be that with genre there certain things that would be contained in a specific genre. An example would be in a romance genre there is always going to be a couple which are both male and female or sometime even couples of the same gender this would be called generic conventions.  Audience likes to know what they are going to watch before they can bother watching a movie going in blind. Some people hate horror and most often going go in blind watching a movie or TV show without knowing any thing about it. That is one of the reason why movie trailers are made in order for the audience to get an idea of what they'll be watching.  

No body is simply going to buy cinema tickets without knowing what they are watching.  By having genres in movies and TV shows it provides variety for people if there only ever was one genre in a movie a lot of people would stop watching movies all together. There are only so many movies that  are similar thanks to having the same genre. People love originality in movies and by not too much which why genre even exists to begin with.  

Genre would also contain in music video as well which also be looked as appealing or non  appealing as some them do have there very own personality as some music video do tell a narrative story with fictional characters.