In-video (instream video) ads are the ads that appear within the video content in a video player. These video ads can appear at the beginning (pre-roll), in the middle (mid-roll), or at the end (post-roll) of the video content, the user intends to watch. AdSpyglass works with pre-roll ads at the moment. In-video ads are the most widespread video ad format.
Ad Exchange
An ad exchange is a marketplace where publishers sell advertising space to advertisers. It works as a real-time auction: publishers provide information about advertising space: