Cloudflare Stream Metrics

I’m wanting to use Cloudflare Stream for providing video services for my customers.

But since they use it for video sales letters is a must that I’m able to fetch and present them a audience retention graph for each particular video.

Example:
500 people started watching the video.
410 were still watching at 00:43
408 were still watching at 00:44
etc…

Is it possible to fetch this kind of metrics from CF Stream API or must I implement this on my own with client(my customer’s leads)-side javascript?