Instance Property


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


@property(nonatomic, readonly) NSArray<AVMetadataItem *> *commonMetadata;


The value is an array of AVMetadataItem objects, one for each metadata key from the common key space for which the asset has an available value. You can use the various class methods provided by AVMetadataItem, such as metadataItemsFromArray:filteredByIdentifier: or metadataItemsFromArray:withLocale: to filter the array to the specific items of interest.

See Also

Accessing Metadata


The lyrics of the asset, in a language suitable for the current locale.


An array of metadata items for all metadata identifiers for which a value is available.


An array of strings, each representing a metadata format that’s available to the asset.

- metadataForFormat:

Returns an array of metadata items found in the container with the specified format.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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