Monetization of a site with films. What player is being used?

Question

Monetization

Everyone saw on watching movies online - advertising, ala azino 3 axes, 1xbet and so on, which is built into the player and shown before viewing.
What are these players, advertising services, how does it work? Can anyone point me to these resources?

Answer 1

Do you know about KVS?
but affiliate programs can also give their own,
often recompiled from open source))

Answer 2

Check playerjs.com