Hi @Blister - the Livepeer protocol is deployed on the Ethereum mainnet, and the best way to interact with it is through the explore (https://explorer.livepeer.org/).
The video streaming product can be found at http://livepeer.com/. It’s a developer tool for anyone building a live streaming application. For example, websites like https://www.playdj.tv uses Livepeer to power their video streaming infrastructure.