New competition providing a home for extremely unfamiliar film (6,7)
I believe the answer is:
motion picture
'film' is the definition.
(I know that film can be written as motion picture)
'new competition providing a home for extremely unfamiliar' is the wordplay.
'new' is an anagram indicator.
'providing a home for' indicates putting letters inside (inserted letters are housed by others).
'extremely' means to remove the middle letters (only the extremes of the word are used).
'unfamiliar' with its middle removed is 'ur'.
'competition' anagrammed gives 'motionpicte'.
'motionpicte' enclosing 'ur' is 'MOTION PICTURE'.
(Other definitions for motion picture that I've seen before include "Film (US)" , "Double Indemnity, say" , "entertainment" , "Movie" , "Cinema film" .)