A Short film is a technical description that originated from the North American film industry in the early years of cinema.
When the concept of a short film first came about they were typically between 20 to 40 minutes long. It wasn’t until years later that the film length of short films started to change.
The change in length came as directors from Europe, Latin America and other countries started to produce them. Now-a-days short films have a duration longer than one minute but shorter than 15 minutes.
The original North American Short Films tended to focus on the character or characters seen within the production, whereas the newer Short films from European directors tend to focus much more on visual drama and plot twists.