In the filmmaking industry, a pitch trailer, also known as a concept trailer or proof of concept trailer, is a movie trailer produced independently by the filmmaker for the sole purpose of illustrating the concept, style and theme of a feature film. Pitch trailers can be used by film directors, producers or executive producers during the film's planning, crowdfunding or fundraising phase. They are often self-financed and are structured and edited to appear like an ordinary feature film trailer. Pitch trailers are most commonly presented to financiers as a part of the film's pitch. Sometimes, these trailers are used for casting purposes and marketing purposes as well.[1]