Create a Fortnite scene in Streamlabs Desktop, add Game Capture in Auto mode, start Fortnite, and confirm gameplay appears without exposing the rest of the desktop. Add microphone and game audio, choose output settings within the destination's limits, then inspect a short recording or controlled test stream before going live. There is no universal bitrate or encoder that works for every PC and platform.
Open Streamlabs Desktop. In the Scenes panel at the lower left, select the plus icon, name the scene Fortnite, and select it. Keep any Starting Soon or private setup scene separate so a scene switch cannot reveal the whole desktop.
2
Add Auto Game Capture
In Sources, select the plus icon, choose Game Capture, and add the source. Open its properties and choose Auto mode. Start Fortnite, return to Streamlabs Desktop, and confirm the game appears in the preview at the intended size.
In the Audio Mixer, speak into the intended microphone and play Fortnite audio. Confirm the correct Mic/Auxiliary and Desktop Audio meters move, neither clips continuously into the red, and no duplicate game-audio source is active.
4
Set a sustainable output
Open Settings > Video and Settings > Output. Choose output resolution, FPS, bitrate, and an available encoder within the current requirements of the connected streaming platform and the measured capacity of the PC. Do not copy one fixed 1080p60 recipe from an older video.
5
Run a private pre-stream check
Record two or three minutes of a real Fortnite match, or use a test stream whose visibility you control. Review gameplay motion, microphone, game audio, overlays, source order, notifications, and any skipped, lagged, or dropped frames.
6
Verify and go live
Success means Fortnite fills the intended canvas, only the game is captured, audio is synchronized, and the same settings pass twice without meaningful frame loss. Then select Go Live, choose the connected destination, enter the correct title and Fortnite category, and confirm the public preview from a separate viewer.
If it does not work
If Auto Game Capture stays black, change that source to Capture Specific Window and select Fortnite. If needed, test Fortnite in borderless windowed mode or use Window Capture; do not disable anti-cheat protections.
If gameplay is smooth but the stream skips encoder frames, lower output FPS or resolution or use a supported hardware encoder. If frames are dropped by the network, follow the destination's bitrate and connection guidance instead.
If private windows or notifications appear, stop the test and replace Display Capture with Game Capture before streaming publicly.
ⓘ Sources and verification
Checked against official documentation on . Scope: Fortnite and Streamlabs Desktop on Windows.
Follow the linked first-party guidance if labels differ after a platform or app update.
