Short films are the same motion pictures as other but with less running time making it not a feature film. In the context of the film industry, it's a very old concept of making a film for a short running time and presents it to studios and production houses. It was a talent hunt thing which creators would do their own and find the funding later for their bigger or extended projects. This way the money is saved, short films take less funding. The motive was not just for creating it and presenting it to studios, many of the time they were shown on the TV for the awareness or promotion of any sort of things. If we talk about the global cinema, the concept of short films was the basis of our conventional cinema.