Based on this document, it seems that I will need to add a lot of code onto the page and add code in AppMeasurement.
I am wondering, could I just add code in DTM? In pageload rule? I hope I don't need to involve development team.
I just noticed that GTM had a new feature called YouTube Video trigger and video variables in 9/12/2017 release. It is pretty easy to track YouTube videos, I am wondering for DTM, do we have any easy way to track YouTube videos now?
Andrey's linked KB article is still the most current way to track youtube videos.