Roger Odin suggests:

"...home movies produces a spectator who is more a "participant" than a real spectator: he takes part in the direction of the film (having held the camera), in the action taking place on screen (having been filmed), in the installation of the projection equipment (having set up the screen and projector), and finally, in this type of event that consists of the collective creation of a memorial diegesis (the narrator tells the story) by the members of the family."