Intro-Outro Video
A 5-second video that either Introduces or Extro-duces (or even both) a material in a production. This kind of video creates branding to the entity that it intro or Extro-duces. A good example of this are the opening videos in Movies that showcases the production company (Disney, Warner Bros, etc)
Commonly, intro-outro videos are just jam packed with graphics, animation and texts; the audio may or may not go with it. The main goal of this video is to establish a brand or mark.