A Content Unit can play videos based on two available logics: a semantic one (automatic) or a custom one (of your choice).

By creating a new Content Unit or by editing an existing one, once you set a language, you can choose video categories to draw from. 

By choosing "All" option, videos relevant to your page contents will be selected among all videos available in default language (english) or the language of your choice. 

If there is no semantic matching between the available videos and your contents, our algorithm will pick videos which guarantee the higher conversion rate possible.  

By choosing "Custom selection" option, you can restrict the set of categories to pick videos from. 

Available categories vary depending on the language selected and the time of edit due to the Creators' updates.