Before you start
- Your normal Boostcast overlay already works in OBS (how to add it) and the Stats API is on.
- TikTok LIVE Studio, or OBS Studio / Streamlabs sending to TikTok with your stream key.
Set it up in 5 steps
Make a portrait scene
In OBS, open Settings › Video and set the canvas to 1080 × 1920 (or add a second canvas with a plugin such as Aitum Vertical). In TikTok LIVE Studio, pick the portrait layout.
Copy your vertical link
In your control panel, open Setup & help and copy the TIKTOK / PHONE link. It looks like this:
https://overlay.rocketleagueapi.com/vertical.html?live=1&ch=…&key=…It has your key in it, so it can read the game by itself, even with OBS closed. Keep it private. Without
live=1it shows a demo match, which is handy for lining things up.Add it on top of your game
TikTok LIVE Studio: add a Link source, paste the link and pick a custom 9:16 size such as 720 × 1280. Studio won't make a source taller than your screen, and the overlay scales itself to any 9:16 size, so 1080 × 1920 isn't needed. OBS: add a Browser source of 1080 × 1920 and tick Control audio via OBS if you want the goal sounds. Either way, put it above your game capture.
Place your game
Room layout (default): scale your Rocket League capture into the transparent game window, 1000 × 563 at x 40, y 520 on a 1080 × 1920 canvas (same proportions on a smaller one). Full-screen layout: add
&layout=fullto the end of the link, then scale the game capture a bit taller than the canvas (about 2160 high on 1080 × 1920, the sides get cut off), centre it and move it up about 230 px, until the game's own score is above the edge. Leave the bottom third free: that's where TikTok puts comments and gifts.Go live and play
Start a match. The scoreboard follows the score, the lights flash in the scoring team's colour on goals (pink for a BANGER!, gold for a HAT TRICK) and the VS intro plays at kickoff.
Options for the link
| Add to link | What it does |
|---|---|
&layout=full | The game fills the phone. Scoreboard under TikTok's top bar, tonight's wins – losses on the left, a quick pop when you beat tonight's fastest goal, bottom left free for comments. |
&score.style=retro | Force a scoreboard style: classic, epic, clean or retro. Default: your choice in the control panel under Look. |
&bg=0 | No room background, only the parts (scoreboard, marquee, lights). Use it if you build the frame yourself. |
¬ch=0 | No notch over the game's own scoreboard. |
&me=YourName | Your in-game name, so your team shows on the left. Usually not needed: set it once in the control panel (Overview). |
Troubleshooting
The scoreboard says BLUE and ORANGE and doesn't move
The game isn't sending data. Check that the link has live=1 and your key (copy it again from the control panel), that the Stats API is on, and that you restarted Rocket League after changing it. The Overview tab in the control panel shows whether the game is connected.
It looks small or squashed in TikTok LIVE Studio
Use a custom size with 9:16 proportions (720 × 1280, for example) instead of dragging the edges. The overlay fits itself to the source without stretching.
The page is blank
Make sure the link starts with https://overlay.rocketleagueapi.com/vertical.html and the source is 9:16.
FAQ
Do I need a second copy of Rocket League or a second PC?
No. The vertical overlay reads the same match data as your normal overlay. You keep one game capture and add one more source.
Which link do I use?
Copy it from your control panel: Setup & help, the TIKTOK / PHONE row. It has your key in it, so it can read the game on its own. Keep it private like your normal link.
Can I stream to Twitch and TikTok LIVE at the same time?
Yes, with two scenes or two OBS canvases: the normal 16:9 scene with the normal overlay, and a 9:16 scene with the vertical overlay. Both can run together because they use the same match data.
Does it show Twitch alerts or predictions?
No. The vertical overlay only shows the moments TikTok viewers care about: the scoreboard, goals, the VS intro and the LED marquee. Twitch alerts and predictions stay on the normal overlay.
Can I change the scoreboard style?
Yes. It follows the style you pick in the control panel under Look, Scoreboard style (Classic, Epic, Clean or Retro). To force one, add &score.style=retro to the link.
Try it on your stream
Boostcast is in beta and free for testers: match intros, goal stingers, a live scoreboard, a vertical TikTok LIVE overlay and Twitch alerts from one OBS browser source.
BECOME A TESTER