Movie posters are available in a variety of shapes, colors and styles. Although there are variants, an average movie poster size has appeared from the multitude. Aside from the standard size, other dimensions are now being used.
Poster sizes will differ from one country to the other. Each country usually determines its own standard sizes. Certain factors affect the availability of different size posters in different nations.
Each country determines its own poster sizes. Some countries follow suit with international standard sizes creating uniformity. However, other countries prefer to set their own standards.