Teaser -

Short, 15–60 second clips used to build "hype" for a product, event, or movie launch.

It explores government transparency, the ethics of intelligence gathering, and the struggle to release the 6,700-page "torture report" to the public. Teaser

In a professional context, a "teaser" is a short promotional piece designed to pique interest without revealing the full story. Short, 15–60 second clips used to build "hype"