Stop filming stroke (3)
I believe the answer is:
cut
I believe this clue is a double definition.
'stop filming' is the first definition.
(I've seen this before)
'stroke' is the second definition.
(cut is a kind of stroke)
(Other definitions for cut that I've seen before include "Truncate; slice" , "Reap" , "A share of the profits" , "Intersect; reduce" , "Sever, slice" .)