How to set up your stream key on OBS Before you stream anything anywhere, you need to give OBS the credentials to broadcast on your channel.

Next, press the Add Account button under the Live Streaming section. If you plan on streaming to Twitch or other baked-in services, select them from the menu, and follow the log-in instructions.

How to set up your first Open Broadcaster Software 'scene' with a webcam's video feed.