{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "VolumeIndex",
  "description": "VOLINDEX document (SMPTE ST 2067-9 §5 / ST 429-9:2014).\n\nIn practice this is always `<Index>1</Index>` for single-volume IMF packages. The spec allows multi-volume packages but they are rarely used.",
  "type": "object",
  "required": [
    "index"
  ],
  "properties": {
    "index": {
      "description": "The volume count. Almost always `1`.",
      "type": "integer",
      "format": "uint32",
      "minimum": 0.0
    }
  }
}