Instance Property

commonMetadata

An array of metadata items for each common metadata key for which a value is available.

Declaration

var commonMetadata: [AVMetadataItem] { get }

Discussion

You can filter the array of AVMetadataItem objects according to locale using metadataItems(from:with:), key using metadataItems(from:withKey:keySpace:), or language using metadataItems(from:filteredAndSortedAccordingToPreferredLanguages:).

Clients that are filtering media selection options by language should be prepared to handle cases in which the extendedLanguageTag property value is nil. Further, they should be prepared to handle cases in which an extendedLanguageTag is present but indicates that the language is “undetermined” (a language value of @"und", as defined in ISO 639-2).

See Also

Managing Metadata

var availableMetadataFormats: [String]

The metadata formats that contain metadata associated with the option.

func metadata(forFormat: String) -> [AVMetadataItem]

Returns an array of metadata items—one for each metadata item in the container of a given format.