Open Broadcaster Software
Free, open source software for live streaming and recording
Main Window
Scenes
Sources
Features
Basic Settings
Advanced Settings
FAQ
Preview Area
On an empty scene you will see the left menu, but if you right-click a visible source in the preview area, you will see the menu on the right:
Projector
Allows you to start a fullscreen "preview/projection" of your current scene on a different Monitor.
Fullscreen Preview Mode
Allows you to start a fullscreen "preview" of your current scene on the current Monitor the OBS window is on. You can still edit your scene and view the control panel if wanted.
Scale to fit mode OR 1:1 Mode
Scale to fit means your scene will be scaled to fit the size of your preview, while in 1:1 mode, OBS ignores the preview Area size and uses your Base resolution to render the scene at its original size.
Enable View
Enable or disable the preview.
Enable Control Panel
Enable or disable the bottom Control Panel area.
Source options
All usual source options are available. (Add, order, size, position, etc.)