This is some raw footage from television station KCRA out of Sacramento. It's a bit of a hodgepodge with audio in some of the clips and no audio in other spots. It's not at all chronological and there is even a clip of Squeaky after she was arrested for her assassination attempt on President Ford along with a clip of Sandy and Susan Murphy exiting a police van at the time they were picked up for questioning in Sacramento.
Most of the clips do relate to Manson though. There is some footage taken after one of Manson's parole hearings and the video ends with a short interview of Manson while in his jail cell on death row at San Quentin.
One of the most interesting parts to me was in the beginning where the yard at the Tate home was filmed. I don't think I have ever seen film footage, just stills.