Mainstream films can best be defined as commercial films that know a wide release and play in first run theatres (A movie theater that runs primarily mainstream film fare from the major film companies and distributors, during the initial release period of each film). Being sold at popular stores (such asAmazon.com or its affiliates) can also be an indicator. Hollywood movies are usually considered mainstream and blockbusters are also mainstream films.
What does `first run theatre', `mainstream film fare', `also be an indicator' mean in the above paragraph ?
Could anyone explain it?
'can also be an indicator' means can also be a sign ... of how mainstream, i.e. popular the film is
'mainstream film fare'...fare, in this case, means something offered to the public, for entertainment, enjoyment, hence films shown to the public.
To sum up, mainstream films are those which are very popular.