I saw this last night on TV and have now tracked it down on YouTube. It’s a documentary about Mary Pickford and the development of early cinema. I wasn’t aware that she was a shrewd businesswoman too and along with Chaplin and Fairbanks started her own studio. If the film industry itself doesn’t interest you then the documentary footage of the time just might. Of particular note is the footage of Mary and Amelia Earhardt speaking about the role of groundbreaking women of the time plus Chaplin and Fairbanks devising some slapstick routines in the garden. I loved it!