Instance Property


The key space for the metadata item’s key.


var keySpace: AVMetadataKeySpace? { get }


The key space specified by this property is typically the default key space for the metadata container in which the metadata item is stored.

AVFoundation uses key spaces to group related sets of keys. For example, the framework defines different key spaces for common keys, iTunes keys, ID3 keys, and QuickTime keys. Key spaces aid in filtering arrays of metadata items.

See Also

Getting Keys and Key Spaces

var key: (NSCopying & NSObjectProtocol)?

The key of the metadata item.

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