Calm account provided in movie (7)
I believe the answer is:
pacific
'calm' is the definition.
(thesaurus)
'account provided in movie' is the wordplay.
'account' becomes 'ac'.
'provided' becomes 'if'.
'in' indicates putting letters inside.
'movie' becomes 'pic' (abbreviation for picture).
'ac'+'if'='acif'
'acif' put into 'pic' is 'PACIFIC'.
(Other definitions for pacific that I've seen before include "Main" , "water" , "Conciliatory - calm" , "Non-combatant" , "Largest ocean" .)