AVTimedAnnotationWriter/AAPLTimedAnnotationWriter.h

/*
 Copyright (C) 2014 Apple Inc. All Rights Reserved.
 See LICENSE.txt for this sample’s licensing information
 
 Abstract:
 
  Annotation writer class which writes a given set of timed metadata groups into a movie file.
  
 */
 
@import Foundation;
@import AVFoundation;
 
NSString *const AAPLTimedAnnotationWriterCircleCenterCoordinateIdentifier;
NSString *const AAPLTimedAnnotationWriterCircleRadiusIdentifier;
NSString *const AAPLTimedAnnotationWriterCommentFieldIdentifier;
 
@interface AAPLTimedAnnotationWriter : NSObject
 
- (instancetype)initWithAsset:(AVAsset *)asset;
- (void)writeMetadataGroups:(NSArray *)metadataGroups;
 
@property (readonly) NSURL *outputURL;
 
@end