@class NSArray, AVWeakReference, NSObject, AVWeakReferencingDelegateStorage;
@protocol OS_dispatch_queue;
@interface AVPlayerItemMetadataOutputInternal : NSObject {
NSArray *metadataIdentifiers;
AVWeakReferencingDelegateStorage *delegateStorage;
NSObject<OS_dispatch_queue> *ivarAccessQueue;
NSObject<OS_dispatch_queue> *accumulationQueue;
AVWeakReference *weakReferenceToHost;
double advanceInterval;
struct __CFDictionary { } *accumulatedMetadataGroups;
}
@end