Quick summary
YouTube is rolling out adverts when you pause a video.
It's one of a number of display advertising changes that have appeared on the platform in recent years.
With a global audience of around 2.5 billion, it's thought that nearly 50% of those who have access to the internet watch YouTube every month. While many of those users are on mobile devices it's increasingly easy, and common, to watch YouTube on the big screen - the television.
