Watchtime user

Is there any way to get a tracker for viewers watching a stream?
Something like user has watched xx:xx hours of (CHANNEL) live streaming!”

I know something similar can be done for how long somebody has been following but is it possible to count the amount of time a viewer has watched like this?

!time ? or change !points to include watchtime

You can use !time to see how long a user was in your chat. But it is not possible to track the time a user is really watching. Some users are only in the chat without watching the stream.