What are the 5 types of video ads?

There are five types of video ads: in-stream, in-banner, rich media, pre-roll, and post-roll. In-stream video ads play before, during, or after the video content that a user has requested. In-banner video ads are displayed in a web banner or ad unit that includes video content. Rich media video ads are interactive and can include features like floating video players, expanded video players, and video skin. Pre-roll video ads are played before the video content that a user has requested. Post-roll video ads are played after the video content that a user has requested.