Caveman’s drawings eons-old are documentaries of that time as they had no understanding of how to preserve sounds. Everything was done by drawing, a resemblance of what is seen. Humans evolved and created language, start writing to preserve sound in a different way like ancient Egyptians hydrographic to tell the stories of their time.
With the evolution of human engineering and understanding of light and sound, we found ways to capture both and freeze it at the moment as seen through the eye of a camera, and sequences of these captured images played back in a specific way as per the intention of storyteller produce a magical viewing experience for the viewers is the art of filmmaking.