The able video player uses cookies, only functional and no tracking cookies.
On https://ableplayer.github.io/ableplayer/#dependencies:

Able Player uses js-cookie to store and retrieve user preferences in cookies. The example code below uses CDN’s hosted libraries; no download required. All Able Player cookies are functional cookies.

We need to create the page "Cookie statement" explaining this.
Best place for this site will be as a subitem of About the website (/docs/about/cookies).