Repair, as film (6)
I believe the answer is:
splice
'repair as film' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for splice that I've seen before include "Join (rope or wedding couple)" , "Unite (in matrimony)" , "Join two ropes together by weaving" , "Knit" , "Interweave strands" .)