English to Italian Other Media / Multimedia footage setup

Do you have a translation for
opener and closer? I have left in English so far
OPENER

The first sequence of a format to open and brand each product.

Option: contains credits or sets an orientation point in a linear medium
Exception: a cold opener
02

CLOSER

Closes a format.
Separates a content package from ads, promos or red bull tv interstitials.

Option: sets an orientation point in a linear medium