{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "array",
  "oneOf": [
    {
      "minItems": 1,
      "maxItems": 1,
      "items": {
        "$ref": "#/$defs/staticFrame",
        "unevaluatedProperties": false
      }
    },
    {
      "minItems": 2,
      "items": {
        "$ref": "#/$defs/staticFrame",
        "unevaluatedProperties": false,
        "properties": {
          "delay": { "type": "number", "exclusiveMinimum": 0 }
        },
        "required": ["delay"]
      }
    }
  ],
  "$defs": {
    "staticFrame": {
      "type": "object",
      "properties": {
        "filename": { "type": "string" },
        "hotspot_x": { "type": "number" },
        "hotspot_y": { "type": "number" },
        "nominal_size": { "type": "number", "exclusiveMinimum": 0 }
      },
      "required": ["filename", "hotspot_x", "hotspot_y", "nominal_size"]
    }
  }
}