Setting impression criteria
Video ads are only shown in ad networks.
- Ad networks
In ad networks, keywords ensure that your ads are served on sites with content that matches your keywords.
Also, you can target your ads in ad networks based on your users' short-term interests: you can show relevant ads to people who have been looking for your products or services just now or over the last few days. You can use interests as separate impression criteria or combine them with keywords to increase your reach.