The most important thing to do is make sure that you input your stream key from Twitch/Youtube/whatever else in OBS. Do this by clicking the "Settings" button in the "Useful buttons" section. Go to `Stream`, select the platform of your choice in `Service` and input the `Stream key` in the box. Other services might allow you to connect your accounts directly to OBS, which might provide additional options/benefits.
We will now go through the highlighted things one at a time.
###### Preview Area
In this area you can see what you are sending to Twitch (when your stream has started). It is a great way to ensure that everything is set-up correctly before going live.
When you are live, we recommend enabling "Studio Mode", by clicking the button in the "Useful buttons" section. This changes your screen to something like this:
Any changes you now make to your screen layout are not immediately visible on stream, so you can make sure your slides/whatever else are properly positioned before transitioning in by clicking the "Transition" button.
###### Scene selection
To keep things simple, we will only create one scene now. Just hit plus, fill out a name.
###### Sources
With your scene created you can add sources to that scene, these are the things that become visible on stream. In the example image above, 6 sources have been added. You can add a source by clicking the "+" button.
In most cases "Window Capture" will do what you want. It allows you to select a currently running program on your computer and add it to your stream.
In the preview area you can now move it around, resize it etc.
The order of the sources in the "sources" box, determines which go on top of which. In the example "FBF_Text" is the "top layer" on the screen, being visible on top of everything else, whereas "Livesplit" is the bottom, meaning if something else is on the same place, livesplit will be invisible.
Finally you can click the "eye" icon to hide or show this particular source.
###### Audio mixer
OBS should capture your microphone by default. You can use the slider here to lower the volume if required, or mute it altogether by clicking the speaker icon. I like to mute my mic when students have some time to answer a question and of course during lecture breaks.
###### Useful buttons
We discussed "Studio mode" above, which leaves two more buttons. "Start Streaming" and "Start recording" both do as the name implies. We recommend making a local recording of the video by also clicking "start recording". This way, you can share (an edited version of) the stream via Brightspace later (or see [Traditional Lectures](Traditional Lectures)) with those unable to attend it due to being ill/unavailable/whatever else.
###### Pitfalls with OBS
- Chrome or Firefox not showing up in your preview? Make sure to disable hardware acceleration in the browser settings (open the settings and look for `hardware`) and restart the browser. It should now correctly show up in your preview.
- (Contributed by Julian Urnbano via Mattermost): if you're going to twitch using OBS, but when you open OBS it doesn't show up, close Teamviewer
##### Finalising the set-up.
##### Finalising the set-up.
On your main channel page (`twitch.tv/<your_username>`) you can edit the title of your stream and other settings by clicking the pencil icon in the bottom right.
On your main channel page (`twitch.tv/<your_username>`) you can edit the title of your stream and other settings by clicking the pencil icon in the bottom right.
