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AVFoundation Framework Reference AVAssetTrackGroup Class Reference

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AVAssetTrackGroup

The AVAssetTrackGroup class encapsulates a single group of related tracks in an asset. More...

Inheritance


Conforms To


Import Statement


import AVFoundation @import AVFoundation;

Availability


Available in iOS 7.0 and later.
  • trackIDs trackIDs Property

    The IDs of the tracks in the group. (read-only)

    Declaration

    Swift

    var trackIDs: [AnyObject]! { get }

    Objective-C

    @property(nonatomic, readonly) NSArray *trackIDs

    Discussion

    The value of this property is an array of NSNumber instances that are interpreted as CMPersistentTrackID values, one for each track in the group.

    Import Statement

    import AVFoundation

    Availability

    Available in iOS 7.0 and later.