Changing times

Tonight I heard the phrase "cameras were rolling..." to introduce a video segment. I'd complain that the news hasn't been using cameras with film for quite a while, but I personally don't know a good way to replace the phrase. "Cameras were on..." sounds a little weak. I don't know what to do about obsolete phrases like "caught on film" and "caught on tape." But I presume sooner or later they will go away like cranks on automobiles.