Google is launching new Video True Opportunities Reporting in Google Ad Manager
https://blog.googleVideo True Opportunities Reporting enables partners to understand the true inventory potential of every commercial break using time-based metrics that are built specifically for video. With this feature, you can easily define the ad duration which you consider to be an ad opportunity.
To give partners a new content-aware way to explore, measure and package their video inventory, Google is making the Video Content Explorer UI more widely available and adding new insights cards. The new audience insights card offers demographic breakdowns of content based on your first-party audience data so that you can understand what audiences are watching your content and more effectively value your inventory.