An art film also called an “art cinema”, “art movie”, or in the US, 
an "independent film" or “art house film” is a typically serious,
noncommercial, independently made film
that is aimed at
a niche audience,rather than a mass
audience.
Film critics and film studies scholars
typically define an “art film” using a “
...canon of films and those formal qualities that mark them
as different from mainstream
Hollywood films.
”Art film producers usually present
their films at specialty theatres
(repertory cinemas, or in the US "arthouse cinemas" and film
festivals.