Minecraft wiki entry for Livestreaming, associated text: To start using Twitch, visit https://account.mojang.com, go to your account settings, then select the option to connect to your Twitch account. If you sign into Minecraft with your username, you'll need to use the newer account format. Information on migrating to a Mojang account can be found here. If you don't have a Twitch account, you can create one at http://twitch.tv/signup.