Glossary

In-stream video ads are advertising videos, usually 15 to 30 seconds long, that accompany online videos. Depending on when the ad is broadcast during an online video, e.g. on YouTube, they are referred to as pre-roll, mid-roll or post-roll ads. Compared to classic television advertising, in-stream video ads are more likely to be accepted, as it were, as a price for free playback.