Press play button to watch the video. It's just a short clip watch till the end!
This is staging page to show use case of Youtube trigger in Google Tag Manager. Here the video I have added is just a test video as an example, considering it an interative tutorial / review video. Play and watch the video, once it is reached at 50% you will notice a feedback section pop down under the video. What ever feedback option you select the data will be sent as an "event" in Google Analytics