progressive streaming Videos upto 3 mins in free plan

Hi, new to cloudfare.
I want to stream videos to my mobile app using Cloudflare.
ChatGPT suggested that I don't need a video streaming service.
Normal CDN service will also work.

I have to
Bind R2 to a Custom Domain via Cloudflare Pages
and Add a Worker to Serve Videos With Range Support.

Can you please tell the process, and how many videos can I serve with this?

I can't find limits in the free tier plan