Live Broadcast System

Racing Sim Radio F1-Style Driver Radio Replays for Sim Racing

Replicate the iconic radio replay system used in Formula 1 — live in your sim racing broadcast. Built natively for OBS, real-time across all drivers, zero latency.

About

Racing Sim Radio is a live broadcast tool designed to bring the iconic F1 team radio replay experience to sim racing streams. When a driver says something worth airing, your broadcast operator captures the moment, trims it, and fires it to your OBS stream — complete with the F1-style animated overlay and radio chirp.

Drivers connect from any device using their microphone. The controller monitors all feeds in real time, freezes the waveform when a clip is worth using, trims to the exact moment, previews it privately, then fires it to the stream. The overlay animates in with the driver's name, the audio plays, and it disappears cleanly once finished.

Built on WebRTC — no servers, no installs, no accounts. Works in any modern browser. Designed to run alongside OBS with a transparent browser source overlay at 1280×720.

01
Real-Time Audio Monitoring Live waveform display per driver with rolling 60s buffer
02
Freeze & Trim Freeze the waveform, drag crop handles to select the exact clip
03
F1-Style OBS Overlay Animated lower-third with driver name, radio chirp, and auto-hide
04
Text Overlays Fire custom typed messages to stream without audio
05
Live Driver Roster Drivers see live name list — taken slots greyed out automatically
06
Zero Setup No installs, no accounts, no servers — runs entirely in browser