The name is the programm of the film: Dziga Vertov is a man with a movie camera, who films many different aspects of urban life in Soviet cities in the 1920s. Together with his wife Elizaveta Svilova he created the experimental silent documentary film The Man with a Movie Camera out of the many bits.
They used and invented many cinematic techniques, as fast motion, slow motion, extreme close-ups etc. It should be shown, that film can go anywhere.
Here you can see a part (you might wanna play some music, it’s silent):
Or you can just watch this part with great music by The Cinematic Orchestra:
And here can you see how Emeralds combined a part of the film with their music: