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Quellcode

CALayer *aLayer = [CALayer layer];
    UIImage *myImage = [[UIImage alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"1" ofType:@"png" inDirectory:@"Pack_1"]];
    [aLayer setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
   
    CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:@"contents"];
    NSMutableArray *images = [NSMutableArray array];
    NSArray *imagePaths = [[NSBundle mainBundle] pathsForResourcesOfType:@"png" inDirectory:@"Pack_1"];
    
    for (int i = 1; i <= [imagePaths count]; i++) {
        
        [images addObject:(id)[[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%d", i] ofType:@"png" inDirectory:@"Pack_1"]] CGImage]];
    }
    
    [anim setDuration:10.0];
    [anim setValues:images];
    
    [aLayer addAnimation:anim forKey:@"contents"];

    AVURLAsset *url = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"Demo" ofType:@"mov"]] options:nil];
    AVMutableComposition *videoComposition = [AVMutableComposition composition];
    
    NSError *error = nil;
    
    //VIDEO TRACK
    AVMutableCompositionTrack *compositionVideoTrack = [videoComposition  addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
    AVAssetTrack *clipVideoTrack = [[url tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
    [compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, [url duration])  ofTrack:clipVideoTrack atTime:kCMTimeZero error:&error];
    
    //AUDIO TRACK
    AVMutableCompositionTrack *compositionAudioTrack = [videoComposition  addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
    AVAssetTrack *clipAudioTrack = [[url tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
    [compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, [url duration])  ofTrack:clipAudioTrack atTime:kCMTimeZero error:&error];
    
    AVMutableVideoComposition *videoComp = [AVMutableVideoComposition videoComposition];
    videoComp.renderSize = clipVideoTrack.naturalSize;
    videoComp.frameDuration = CMTimeMake(1, 25);
    
    //COMBINE
    CALayer *parentLayer = [CALayer layer];
    CALayer *videoLayer = [CALayer layer];
    parentLayer.frame = CGRectMake(0, 0, videoComp.renderSize.width, videoComp.renderSize.height);
    videoLayer.frame = CGRectMake(0, 0, videoComp.renderSize.width, videoComp.renderSize.height);
    [parentLayer addSublayer:videoLayer];
    [parentLayer addSublayer:aLayer];
    
    videoComp.animationTool = [AVVideoCompositionCoreAnimationTool videoCompositionCoreAnimationToolWithPostProcessingAsVideoLayer:videoLayer inLayer:parentLayer];
    
    ///Instruction
    AVMutableVideoCompositionInstruction *instruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
    instruction.timeRange = CMTimeRangeMake(kCMTimeZero, videoComposition.duration);
    
    AVMutableVideoCompositionLayerInstruction *layerInstruction1 = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:clipVideoTrack];
    
    instruction.layerInstructions = [NSArray arrayWithObjects:layerInstruction1, nil];
    videoComp.instructions = [NSArray arrayWithObject:instruction];
    
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy_MM_dd_HHmmss_zzz"];
    
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *destinationPathHighQ = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"Merged_Video_High_%@.mov", [dateFormatter stringFromDate:[NSDate date]]]];
    
    AVAssetExportSession *exporterHighQ = [[AVAssetExportSession alloc] initWithAsset:videoComposition presetName:AVAssetExportPresetHighestQuality];
    [exporterHighQ setVideoComposition:videoComp];
    exporterHighQ.outputFileType = AVFileTypeQuickTimeMovie;
    exporterHighQ.outputURL = [NSURL fileURLWithPath:destinationPathHighQ];
        
	[exporterHighQ exportAsynchronouslyWithCompletionHandler:^{
        
        dispatch_async(dispatch_get_main_queue(), ^{
            
            switch (exporterHighQ.status) {
                case AVAssetExportSessionStatusCompleted:
                    [self exportDidFinish:exporterHighQ];
                    break;
                default:
                    break;
            }
        });
    }];