Works with

VBOX Motorsport video overlay

TrackHero reads Racelogic .vbo files natively, so a VBOX Motorsport session can be rendered straight onto your onboard video as speed, G-force and lap-delta gauges. Load the .vbo and the footage in desktop Chrome, align them on the timeline, and export an MP4. Free, no install, nothing uploaded.

VBO is the format TrackHero was built around

.vbo is Racelogic’s own logging format and the closest thing the track-day world has to a common language. It is plain text: a header block, a list of column names, then rows of samples. Because it is readable and widely supported, RaceChrono and Dragy both export to it as well, which is why supporting VBO covers most loggers people actually own.

TrackHero parses it directly. There is no conversion step and no intermediate CSV.

What the file contains

A standard VBO carries the channels TrackHero draws from:

Channel	Meaning
`time`	UTC time since midnight, as `HH:MM:SS.SS`
`lat` / `long`	Position in minutes, not degrees
`velocity`	Speed in km/h
`heading`	Degrees relative to north
`height`	Metres above sea level, WGS84
`sats`	Satellites in use

Two quirks in the format catch people out. Positions are stored in minutes rather than decimal degrees, and positive longitude means West, which is the opposite sign convention to almost everything else. Neither matters if you only ever open the file in a tool that already knows, but it explains why a naive spreadsheet import puts your session on the wrong side of the planet.

The sats column also encodes flags: 64 is added when the brake trigger input is active, and 128 when the unit is applying a DGPS correction. So a value of 138 means ten satellites with DGPS, not a hundred and thirty-eight satellites.

Capture-time overlay versus rendering afterwards

VBOX HD loggers can burn an overlay into the video as it records. That is convenient, but it fixes the result at the moment of capture: the layout, the channels shown and the styling are all locked in.

Rendering afterwards from the .vbo keeps the decision open. You can change what is displayed, restyle it to match a livery, render a single lap instead of a whole session, or put the data over footage from a completely different camera: a GoPro, a phone, a chase car.

Working alongside Circuit Tools

Circuit Tools and TrackHero are not competitors. Circuit Tools is an analysis environment: speed traces, lap comparison, driver coaching. TrackHero produces the artefact you actually share: a finished MP4 with the numbers drawn into the picture. Analyse in one, render in the other.

Requirements

Desktop Chrome. No installation, no account, no watermark, and no upload: parsing, compositing and encoding all happen locally.

Last updated 2026-08-28.

Frequently asked questions

Which VBOX products does this work with?

Any Racelogic product that writes a standard .vbo file, including VBOX Sport and the VBOX HD video loggers. The .vbo format is Racelogic's own, and it is the same text-based format across the range, so TrackHero does not need to know which unit produced it.

Do I still need Circuit Tools?

They do different jobs. Circuit Tools is for analysis: traces, comparisons, driver coaching. TrackHero is for output: producing a finished video with the data drawn into the picture. Many people use both, analysing in Circuit Tools and rendering the shareable clip in TrackHero.

My VBOX already burns an overlay into the video. Why use this?

VBOX HD units render their own overlay at capture time, which means the layout is fixed once the session is recorded. Rendering afterwards from the .vbo lets you change what is shown, restyle it, or overlay data onto footage from a different camera entirely.

What sample rate does TrackHero expect?

Anything the logger produces. VBOX units commonly log at 10 Hz or 20 Hz, and higher rates simply give a smoother needle. TrackHero interpolates between samples against the video timeline either way.