When you're working for a film crew then everything you do is dedicated to their project, as it should be. In fact, a long time ago I did some setup work for a very popular TV show that had a segment in Latin America and they would not even let me take still pics just for my own keepsakes of the shows stars. So, the bottom line is everything they do is protected and they won't just shoot video for someone else for free, nor can we take video of them or their clients. Basically, when you do one of these things you are totally working for the clients... we can't even take our own clients on these trips.