For purposes of this section, the exclusion under subsection (a) of transfers of copyright ownership in a motion picture
that are limited to public performance rights includes transfers to a terrestrial broadcast station, cable system, or programmer to the extent that the station, system, or programmer is functioning as an exhibitor of the motion picture
, either by exhibiting the motion picture
on its own network, system, service, or station, or by initiating the transmission of an exhibition that is carried on another network, system, service, or station. When a terrestrial broadcast station, cable system, or programmer, or other transferee, is also functioning otherwise as a distributor or as a producer of the motion picture
, the public performance exclusion does not affect any obligations imposed on the transferee to the extent that it is engaging in such functions.