# Media Document

## Purpose
Non-geospatial or loosely geospatial media assets: photos, videos, audio, and other attachments linked to a location.

## GeoJSON (DB metadata)
```json
{
  "type": "Feature",
  "geometry": {"type": "Point", "coordinates": [30.151, 59.951]},
  "properties": {
    "type": "Media",
    "title": "Field Photo",
    "created_at": "2025-03-01T12:00:00Z",
    "updated_at": "2025-03-01T12:00:00Z",
    "source": {
      "url": "/s3/<bucket>/<ResultKey>/<filename>",
      "type": "Media",
      "size": 345678
    },
    "metadata": {"caption": "Bridge abutment", "author": "J.D."}
  }
}
```

## Required properties
- `properties.type` = `Media`
- Point geometry where the media was captured or associated
- Valid media link with correct MIME type

## Publishing workflow
1. Upload media to a serving location (CDN, S3, or app storage).
2. Publish Feature with type `Media` linking the file.

## Validation checklist
- Media is accessible via URL.
- EXIF time and location (if any) correspond to geometry and timestamps.

See [Common properties](../common.md) for shared fields like legend, metadata, and classification.
See also: [GeoJSON Strategy](../../Geojson_strategy.md) and [Upload Strategy](../../Upload_strategy.md).