Facebook announced new tools for measuring audience engagement, and the benefit of sharing videos. According to Facebook:
Publishers will now be able to break out minutes viewed by age, gender, and top geographic locations. Moreover, publishers will be able to compare and contrast demographics for a specific video with typical video viewers on that Page. Find the demographic data in the new ‘Audience and Engagement’ card in Video Insights; this will be available for all videos, including Live and 360.