A collection of metadata items that are valid for use during a specific time range.
- iOS 4.3+
- macOS 10.7+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
AVTimedMetadataGroups are used to represent chapters, optionally containing metadata items for chapter titles and chapter images.
Initializing Timed Metadata Group Objects
Configuring Timed Metadata Group Attributes
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