{"slug": "race-keeper-rkd-telemetry-files-rkd-telemetry-extractor-decoding-race-keeper-day", "title": "Race-Keeper RKD telemetry files: RKD Telemetry Extractor: decoding Race-Keeper track-day recordings", "summary": "A developer built the RKD Telemetry Extractor, a reverse-engineered tool that converts proprietary Race-Keeper .rkd binary files into Telemetry Overlay Custom CSV at 30 Hz and GPX 1.1, enabling telemetry visualization on macOS and Linux. The project ships two independent parser implementations, in Python and Go, that produce byte-for-byte identical output, and the format was reverse-engineered in a single day using Claude Code as a collaborative analysis partner, with Claude Opus 4.6 credited as a co-author on commits covering cross-platform parity and test coverage. The tool extracts GPS, accelerometer and gyroscope data but does not yet support OBD-2, because the recordings used for reverse-engineering contained none; the author has issued a call for sample files to add that feature.", "body_md": "## Evidence at a glance\n\nBased on the linked sources. The author's reported result and independent confirmation are separate checks.\n\n- AI involvement\n- Reported models: Claude. Tools: Claude Code, Python, Go, pytest. The writeup below describes the work attributed to AI.\n- Reported result\n- Works. This is the directory's source-based outcome classification.\n- Independent confirmation\n- Not reported.\n- Human work and limitations\n- The project uses Claude Opus 4.6 as a co-author for various commits, including fixes for cross-platform parity and test coverage improvements.\n\n### Original sources\n\n## What was done\n\nThe RKD Telemetry Extractor is a reverse-engineered tool that converts proprietary Race-Keeper .rkd files into CSV and GPX formats for cross-platform use, enabling telemetry visualization on macOS and Linux.\n\nThe RKD Telemetry Extractor provides a method to extract GPS, accelerometer, and gyroscope data from proprietary .rkd binary files used by Race-Keeper \"Instant Video\" systems. The project includes two independent parser implementations, in Python and Go, which produce byte-for-byte identical output. The format was reverse-engineered in a single day using Claude Code as a collaborative analysis partner. The tool exports data to Telemetry Overlay Custom CSV (30 Hz) and GPX 1.1 for track visualization. The author reports that the format uses a PNG-style magic signature followed by a sequential stream of typed records. While the tool successfully processes GPS and IMU data, it currently lacks support for OBD-2 data, as the recordings used for reverse-engineering did not contain such data. The author notes that Race-Keeper systems support OBD-II, and has issued a call for sample files to implement this feature. The project documentation includes a formal binary format specification, research notes, and session logs detailing the AI-assisted analysis process. See the [project repository](https://raw.githubusercontent.com/sam-dumont/rkd-telemetry-extractor/HEAD/README.md) for full details.\n\n## Reproduce it\n\n```\nFor Python: cd python && python3 rkd_parser.py outing.rkd. For Go: cd go && go build -o rkd-parser . && ./rkd-parser outing.rkd.\n```\n\n", "url": "https://wpnews.pro/news/race-keeper-rkd-telemetry-files-rkd-telemetry-extractor-decoding-race-keeper-day", "canonical_source": "https://reversedwithai.com/p/race-keeper-rkd-telemetry-files-424965e7", "published_at": "2026-10-23 10:39:20+00:00", "updated_at": "2026-10-23 12:10:26.099078+00:00", "lang": "en", "topics": ["ai-tools", "developer-tools", "ai-agents"], "entities": ["Race-Keeper", "RKD Telemetry Extractor", "Claude", "Claude Code", "Claude Opus 4.6", "Python", "Go", "GPX 1.1"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/race-keeper-rkd-telemetry-files-rkd-telemetry-extractor-decoding-race-keeper-day", "markdown": "https://wpnews.pro/news/race-keeper-rkd-telemetry-files-rkd-telemetry-extractor-decoding-race-keeper-day.md", "text": "https://wpnews.pro/news/race-keeper-rkd-telemetry-files-rkd-telemetry-extractor-decoding-race-keeper-day.txt", "jsonld": "https://wpnews.pro/news/race-keeper-rkd-telemetry-files-rkd-telemetry-extractor-decoding-race-keeper-day.jsonld"}}