Lizzi Harvey from Google posted an update to the video structured data page at Google. Now Google is recommending you use the interactionStatistic instead of interactionCount. Google will support both for some time, but if you are using interactionCount, you should probably swap it out for interactionStatistic.
Here is Lizzi's tweet:
✒️Doc update✒️
— Lizzi Harvey (@LizziHarvey) October 17, 2019
For Video SD, Google is now recommending interactionStatistic instead of interactionCount. Google will still support interactionCount for now, but interactionStatistic should be used moving forward.https://t.co/Mrmt0kGy3o pic.twitter.com/3vB77CHnzZ
Starting in October 2019, Google changed its documentation to recommend interactionStatistic instead of interactionCount. Google will continue to support interactionCount, but it recommends interactionStatistic moving forward.
Forum discussion at Twitter.