---
title: extraAttributes
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avmetadataitem/extraattributes
---

# extraAttributes

A dictionary of additional attributes for a metadata item.

## Declaration

```swift
var extraAttributes: [AVMetadataExtraAttributeKey : Any]? { get }
```

## Discussion

Discussion Extra attributes, when they’re present, are specific to metadata container formats and keys in their associated key-spaces. For example, a metadata item can represent the “attached picture” frame defined by the ID3 tag specification with keyspace id3 and key id3MetadataKeyAttachedPicture, a value that carries the image data, and extra attributes that include a description of the picture as carried in the ‘APIC’ frame of the ID3 tag.

## See Also

### Accessing values

- [value](avfoundation/avmetadataitem/value.md)
- [stringValue](avfoundation/avmetadataitem/stringvalue.md)
- [numberValue](avfoundation/avmetadataitem/numbervalue.md)
- [dateValue](avfoundation/avmetadataitem/datevalue.md)
- [dataValue](avfoundation/avmetadataitem/datavalue.md)