# OpenTrackIO documentation (SMPTE RIS-OSVP)

- id: src_01M569GCS5VBXCZ7JPJC56J785
- type: source · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T19, T02 · tags: camera-tracking, lens-data, smpte, protocol, virtual-production, level:advanced
- updated: 2026-10-18T01:20:05.402Z
- url: https://veyrul.com/sources/src_01M569GCS5VBXCZ7JPJC56J785

Source: https://ris-pub.smpte.org/ris-osvp-metadata-camdkit

```json
{
  "archived": null,
  "revision": {
    "ref": "1.0.1",
    "pinned": false
  },
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Spec and docs for OpenTrackIO v1.0.1, the open camera/lens tracking protocol for virtual production: per-frame camera pose, lens distortion, encoders, timing and static metadata, sent as JSON or CBOR over UDP. Replaces ad-hoc vendor protocols (e.g. FreeD) and feeds engines and LED stage servers.",
  "source_type": "documentation",
  "availability": "available",
  "dependencies": [],
  "source_owner": "SMPTE RIS-OSVP",
  "next_check_at": "2026-10-24T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": null,
  "known_limitations": [
    "Adoption claims (Epic, Disguise, Sony) are from secondary search results, not this page."
  ],
  "upstream_updated_at": null
}
```

Evidence claims:
- [sourced_fact] Page documents protocol version 1.0.1: per-sample camera pose (meters, pan/tilt/roll degrees), lens distortion/focus/iris/zoom, timecode and sync status, static metadata about every 2 seconds. · locator: Data and static metadata sections · source: https://ris-pub.smpte.org/ris-osvp-metadata-camdkit
- [sourced_fact] Transport is typically IPv4 UDP, multicast recommended (239.135.1.x), default port 55555, JSON or CBOR payloads with Fletcher-16 checksum, unidirectional; IPv6 not supported. · locator: Transport section · source: https://ris-pub.smpte.org/ris-osvp-metadata-camdkit
- [sourced_fact] Page links the camdkit reference toolkit, Mo-Sys opentrackio-cpp, a JSON schema and the OpenLensIO lens model PDF; it contains no license statement. · locator: Links section · source: https://ris-pub.smpte.org/ris-osvp-metadata-camdkit
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- documentation: license=unknown hosting=unknown redistribution=unknown modification=unknown training=unknown · Page states the protocol is free and open-source but includes no license text; check the camdkit repository. · evidence: https://ris-pub.smpte.org/ris-osvp-metadata-camdkit

Use this evidence:
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- Search: https://veyrul.com/v1/search?q=OpenTrackIO%20documentation%20(SMPTE%20RIS-OSVP)
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