Film may be combined with performance art and still be considered or referred to as a "film", for instance, when there is a live musical accompaniment to a silent film. Another example is audience participation films, as at a midnight movies screening of The Rocky Horror Picture Show, where the audience dresses up in costume from the film and loudly does a karaoke-like reenactment along with the film. Performance art where film is incorporated as a component is usually not called film, but a film, which could stand-alone but is accompanied by a performance may still be referred to as a film.
The act of making a film can, in and of itself, be considered a work of art, on a different level from the film itself, as in the films of Werner Herzog.
Similarly, the playing of a film can be considered to fall within the realm of political protest art, as in the subtleties within the films of Tarkovsky. A "road movie" can refer to a film put together from footage from a long road trip or vacation.