Playing a timeline when an ad comes into the viewport

[crafted 0 Likes (Newbie)]

Hi there,

 

I had a thought that it would be cool for a banner to only start playing when the ad comes into the users viewport. So that if the ad isn't in the users view it doesn't play while they're not watching, if the ad is positioned further down a page for example.

 

What's the best way to achieve this and is this something that is permitted to do on Google DoubleClick or Google Display Network?

 

Thanks.

[davi 100 Likes (Specialist)]

I do it with my banners in both GSAP and Animate CC versions (using my own template), use Intersection Observer. I make it play when in view, pause when out of view, and finally, go to the last frame when clicked or switching tabs.

Yes, permitted on everything. I don't bother polyfilling it either, although there is one which adds an extra 7k.