Co-viewing: Definition

When multiple people watch YouTube on a connected TV (CTV) device together and view an ad at the same time, it could lead to more impressions and reach for your campaign. Discover what makes YouTube CTV unique

Panels show that multiple people are watching YouTube together on TV screens, a consumer behavior characteristic of linear television viewership as well. Google measures co-viewing on TV screens using real-time and census-level surveys served in over 100 countries and 70 languages worldwide. Statistical methods are used to eliminate response bias and to make sure that the results accurately represent YouTube’s viewers. Google uses this information within a dynamic reach model to measure and predict co-viewing based on different factors such as the day-of-week, time-of-day, country, and user demographics.

For subtitles in your language, turn on YouTube captions. Select the settings icon Image of YouTube settings icon at the bottom of the video player, then select "Subtitles/CC" and choose your language.


With co-viewing metrics, you can gain additional insight into your audience, allowing you to measure and plan for additional impressions and reach through CTVs. This means more accurate reach forecasts and campaign reports that enable you to make a fair comparison between YouTube and the rest of your linear and connected TV buy, ultimately driving better investment decisions.

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