How to track video play events with Google Analytics?
In the plugin, step 3 Options tab, click Gallery Options on the left, at the bottom of the right options panel, enter your Google Analytics tracking ID to the input box Google Analytics Tracking ID.
Google Analytics tracking ID is something like UA-000000-01. To find your Google Analytics tracking ID, please view: https://support.google.com/analytics/answer/1032385?hl=en.
To view the logged events, in your Google Analytics dashboard, click left menu Behaviour -> Events -> Top Events. The event category is Video. It will also track the image viewing events, the event category is Image.