A value that defines the metadata identifiers for different file formats.
SDKs
- iOS 11.0+
- macOS 10.13+
- Mac Catalyst 13.0+
- tvOS 11.0+
- watchOS 6.0+
Framework
- AVFoundation
Declaration
typedef NSString *AVMetadataIdentifier;
Type AliasAVMetadata
AVMetadata
Topics
Common Metadata Identifiers
iTunes Metadata Identifiers
ICY Metadata Identifiers
ID3 Metadata Identifiers
QuickTime Metadata Identifiers
QuickTime User Metadata Identifiers
3GP User Metadata Identifiers
Type Properties
See Also
Configuring Metadata Values
valueThe value for the mutable metadata item.
localeThe locale for a mutable metadata item.
timeThe timestamp for a mutable metadata item.
durationThe duration of a mutable metadata item.
extraA dictionary containing the metadata item’s additional attributes.
AVMetadataA value that defines extra attribute keys.
dataThe data type of the metadata item's value.
extendedThe IETF BCP 47 (RFC 4646) language identifier of the metadata item.
identifierIndicates the identifier of the metadata item.
startThe start date of the timed metadata.