When you think video ads, you think sight, sound, and motion. But what happens if someone only sees your ad without hearing it? Or if someone only hears your ad without seeing it?

We looked at aggregated YouTube data from over 1,000 video ads to see how sight and sound are associated with YouTube ad effectiveness.

Without sight (viewability*) or sound (audibility**), are video ads still effective? In short, yes.

But video ads are even more effective when they're seen and heard.

Scroll through the five charts below to see how video viewability and audibility are associated with ad effectiveness on YouTube.

Differences in brand awareness for audible and viewable ads on YouTube

Users who see and hear video ads experience higher brand awareness than those who only see or only hear ads.

Differences in ad recall for audible and viewable ads on YouTube

Users who see and hear ads experience higher ad recall than those who only see or only hear ads.

Differences in consideration for audible and viewable video ads on YouTube

Users who see and hear ads experience higher brand consideration than those who only see or only hear ads.

Brand performance of YouTube ads by viewable time

Users who watch ads for more than three seconds experience higher brand awareness, ad recall, and consideration.

State of sight and sound for video ads on YouTube

Mere exposure to ads isn't enough. Ads are more effective when they're seen and heard. That means building engaging creative that viewers want to watch and listen to is more important than ever.

For more research on the scarcity of attention and what that means for various ad platforms and effectiveness, check out new visual attention research from Ipsos.

*Viewable: At least 50% of ad pixels are viewable on screen for at least two seconds (the Media Rating Council definition of viewable).

**Audible: Audio level greater than or equal to 10% at some point during the ad playback.