The Broadcast Overlay included in the December 2024 update of Le Mans Ultimate is an external tool, enabling users to create live and recorded videos with a HTML overlay available to composite outside of the game.
At the time of publish, there are some small known bugs or refinements that for Broadcast Overlays and you should check the game’s known issues.
Getting Started
Firstly, you need to ensure Le Mans Ultimate is running and either start a Race Weekend session or join a hosted multiplayer session (for online, you should join as a spectator).
Open your browser of choice and navigate to http://localhost:6397/overlays/controlpanel.html which will bring up the Control Panel that allows you to change the overlay components. Note: you can replace [localhost] with an IP address of another computer if you want to control the overlay from a different PC.
You can then open the Overlay page – either in a web browser to check or directly inside your streaming tool of choice (such as OBS or vMix) at the following address: http://localhost:6397/overlays/overlays.html.
Adding an HTML overlay to OBS is as simple as going to your “scene” and adding a “browser” then inputting the link to overlays.html. You should configure this size to 1920 x1080 as other resolutions are not supported at this time – you can still overlay this on a 4K or other resolution game capture.
When spectating, you should click the “watch” bar – then ensure you are “live” (not in replay)
What does everything do?
Clicking on “onboard” or “trackside” next to a player’s name will snap the camera in game to that user
Refresh overlays page – refreshes overlays.html, for use if the overlays are misbehaving
Hide in-game panels – hides the watch/replay bars
Session info – adds the countdown timer for session length and timing bar
Tower – turns on the timing tower with gaps/interval/other info
FCY – displays Full Course Yellow label next to session info (note: as of release of this tool, this is not implemented on a game level but could be used manually by server admins)
Safety Car – displays Safety Car label next to session info (note: as of release of this tool, this is not implemented on a game level but could be used manually by server admins)
Tower Data
Driver or Team – displays either Driver or Team Name in the tower
Mixed/Multiclass/[ClassName] – determines what categories to show in the tower
Autocycle – determines the number of seconds before the tower rotates to show lower classified drivers
Gap to leader – displays the gap between all cars and the leader (or class leader)
Gap to next – displays the interval between cars
Number of stops – displays the number of stops a car has made
Positions gained/lost – as described
Energy remaining – the amount of NRG remaining in a stint
Tyre – displays the compound a car is using
Show/hide fields – options for reducing tower width
Detail Panel
Driver Information – displays a central “lower-third” with the Driver/Position/Car
Qualifying Information – displays a lower-third in the bottom-right that includes target time and sector times
Onboard Data
On-board driver box – displays an “upper third” middle with driver name/team/position and “On Board” label
On board HUD – displays the throttle/brakes/speed/gear overlay (recommend disabling the tower when in this view so there is no overlap)
1v1 Battle – displays either last or best lap time comparisons between a car and the one in front
Set Starting Order – used after qualifying to let the overlay know who started where for displaying information such as positions gained/lost
Session Results – Select class(es) and session for display
Mid Race Results – Same as above
