Movie query

Great movie. I enjoy greatly French movies such as this.
I think many people see this type of gritty film as the French pushing the envelope, but I think they are just excellent at observing and recording and portraying normal life. Perhaps not normal life everywhere, but you can see that this would be normal people doing normal stuff in many cities around the world. The French are the best at doing this.

My query is does anyone know if the straight pornography film being shown in this Paris cinema setting simply acted out by actors of this films cast, or was it an actual straight pornography film being used as the backdrop ? If the latter, what was it?

Thnaks many. G