Instance Property


The key of the metadata item.


@NSCopying var key: (NSCopying & NSObjectProtocol)? { get }


The key property contains the true key used to identify the contents of the metadata item. This value is specific to the key space of the metadata item.

See Also

Getting Keys and Key Spaces

var keySpace: AVMetadataKeySpace?

The key space for the metadata item’s key.

struct AVMetadataKeySpace

A value that defines a metadata key space.

var commonKey: AVMetadataKey?

The common key of the metadata item.

struct AVMetadataKey

A value that specifies a type of metadata