We are in the process of migrating from the AdWords API to the Ads API.
In comparing the results, we have noticed that for some campaigns, the video_views metric is 0 in the Ads API where it is not 0 in the AdWords API. However, we do see the "video quartile rate" information as non-zero, and the same in both the APIs (as are other metrics the same).
For some campaigns, the video views are the same between the APIs, so it is not the case that we are simply mis-requesting the data.
What might be a reason why video_views could be 0 in the Ads API, when it is not zero in the AdWords API?
I looked in the Google Ads UI, and the Views there are 0 for this campaign, while the quartile rates are not 0. Seems strange.