---
title: commonKeySubject
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avmetadatakey/commonkeysubject
---

# commonKeySubject

A key that represents the subject information for the media.

## Declaration

```swift
static let commonKeySubject: AVMetadataKey
```

## See Also

### Common metadata keys

- [commonKeyAccessibilityDescription](avfoundation/avmetadatakey/commonkeyaccessibilitydescription.md)
- [commonKeyAlbumName](avfoundation/avmetadatakey/commonkeyalbumname.md)
- [commonKeyArtist](avfoundation/avmetadatakey/commonkeyartist.md)
- [commonKeyArtwork](avfoundation/avmetadatakey/commonkeyartwork.md)
- [commonKeyAuthor](avfoundation/avmetadatakey/commonkeyauthor.md)
- [commonKeyContributor](avfoundation/avmetadatakey/commonkeycontributor.md)
- [commonKeyCopyrights](avfoundation/avmetadatakey/commonkeycopyrights.md)
- [commonKeyCreationDate](avfoundation/avmetadatakey/commonkeycreationdate.md)
- [commonKeyCreator](avfoundation/avmetadatakey/commonkeycreator.md)
- [commonKeyDescription](avfoundation/avmetadatakey/commonkeydescription.md)
- [commonKeyFormat](avfoundation/avmetadatakey/commonkeyformat.md)
- [commonKeyIdentifier](avfoundation/avmetadatakey/commonkeyidentifier.md)
- [commonKeyLanguage](avfoundation/avmetadatakey/commonkeylanguage.md)
- [commonKeyLastModifiedDate](avfoundation/avmetadatakey/commonkeylastmodifieddate.md)
- [commonKeyLocation](avfoundation/avmetadatakey/commonkeylocation.md)