Video female and male crossing international borders (4)
I believe the answer is:
film
'video' is the definition.
(thesaurus)
'female and male crossing international borders' is the wordplay.
'female' becomes 'f' (abbreviation).
'and' means one lot of letters go next to another.
'male' becomes 'm' (common abbreviation).
'crossing' is an insertion indicator.
'borders' says to hollow out the word (remove centre letters) (only the edge or border letters remain).
'international' with its centre removed is 'il'.
'f'+'m'='fm'
'fm' going around 'il' is 'FILM'.
(Other definitions for film that I've seen before include "Thin covering or photographic medium (4)" , "Thin layer (covering a surface)" , "Screen" , "Shoot - thin layer" , "Thin layer - seen on screens" .)