Bring a modelling contract with you. When the actress arrives for her performance, you hand her a script describing the scene which she will perform in and then have her endorse a contract stipulating her participation in a pornographic video.
The video camera is placed in a position which shows very little of the actors (e.g., it points to the wall opposite the bed). The scene begins. The actors stand in front of the camera and utter a few meaningless lines to establish their identities. The camera remains pointed away from the bed but continues taping. The audio is silenced.
The video is kept by the client with the permission of the actress to serve as evidence that the actual intent was to make a video.
Has anyone ever tried this before? I know it is convoluted, but it seems to be a very clever way to beat the system and, once and for all, end the prohibition of pleasure.