Video Analytics

Hi there,

I'm trying to understand the video analytics of MS Stream. I know that there is a difference between views and viewers, but I would like to know at what point (maybe at what percentage of watchtime ??) a visitor becomes a viewer? How is that defined? I'm also having trouble understanding the viewership retention. Does a 10% retention mean that out of 100 viewers, only 10 people saw this part? ..and yes, I know this link, but I dont get it:https://learn.microsoft.com/en-us/stream/streamnew/video-analytics-viewership-retention 😉 

Thank you very much!