Streamlabs OBS is a forked version of OBS that is focused on themes and customization. It is free, but you can upgrade to Streamlabs Prime for $12/month.
Make sure you've got a Mic and Webcam setup to start live streaming.
Navigate to Content, then go to Live Events to first create a live event.
If you haven't created a live event before, make sure to check our help article for detailed instructions.
On the Stream tab, you're going to see a Stream URL and a Stream Key. These are needed so Streamlabs OBS can link with Uscreen. You will need to copy both the URL and the key to start streaming.
Since stream keys can be reused, you will have to wait at least 5 minutes from event to event to reuse the same key. If you are creating a completely new live event, then you won't need to worry about that.
In Streamlabs OBS, navigate to Settings in the bottom left and click the Stream tab. Set the Stream Type to Custom Streaming Services, and then you can paste in your Stream URL and Stream Key below.
On the Streamlabs OBS control panel, select Go Live, located on the bottom right.
Uscreen should be receiving your stream from Streamlabs OBS, but before you go live, make sure you give your Live Event a test. Go to Content and click Live Events. Select the Live Event you want to stream and click Edit. Then under the Stream tab, click on Test Player. If you see your video/content from Streamlabs OBS, you are ready to go live.
Just note that you sometimes have to wait a good 30 seconds to see your content.
If ready, click Go Live, and your live event has begun! Remember that as soon as you click on Go Live, whatever you are streaming will appear to your users, so you can start talking right away!