Do you want to know how many times your videos have been played. You can get to know the count through Facebook page Export Data feature.
Steps to know the posts and their video count -
Step 1 - Go to your Page -> Insights and Click "See All".
Step 2 - Click "Export Data" on the Insight Page.
Step 3 - Select "Post Level Data" radio button and click download.
Step 4 - Open the excel file and move to "Lifetime Posts Consumption" Tab.
Step 5 - Check the Video Play column for the respective video post.
