Skip to content


All things video.

< Full glossary


Prerolls, postrolls, and midrolls are all forms of secondary content that intentionally interrupt the primary content that a viewer is intending to watch.

As the name suggests, postrolls play after the main content is finished. Postroll ads do occur on some websites, but are less common because users will often abandon the page when the content is finished. Postroll bumpers are sometimes used to end the video with a logo or a prompt to share the content.

Related terms:

Learn about Mux Video

Mux Video is an API-first platform, powered by data and designed by video experts to make beautiful video possible for every development team.