video frames to ofImage

gistfile1.txt

//--------------------------------------------------------------
void ofApp::setup() {
    
    
    NSURL* videoUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"hands" ofType:@"m4v"]];
    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoUrl options:nil];
    AVAssetImageGenerator *generator = [[AVAssetImageGenerator alloc] initWithAsset:asset];
    generator.requestedTimeToleranceAfter =  kCMTimeZero;
    generator.requestedTimeToleranceBefore =  kCMTimeZero;
    
    float seconds = (asset.duration.value/asset.duration.timescale);
    CGSize size = [[[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] naturalSize];

    
    NSLog(@"seconds:  %f width: %f height: %f ", seconds, size.width, size.height);
    
    int withFPS = 5;
    NSMutableArray* frameImages = [NSMutableArray new];
    
#if 1
    for (Float64 i = 0; i < CMTimeGetSeconds(asset.duration) *  withFPS ; i++){
        @autoreleasepool {
            CMTime time = CMTimeMake(i, withFPS);
            NSError *err;
            CMTime actualTime;
            CGImageRef image = [generator copyCGImageAtTime:time actualTime:&actualTime error:&err];
            UIImage *generatedImage = [[UIImage alloc] initWithCGImage:image];
            [frameImages addObject:generatedImage];
            ofImage imageOF;
            ofxiOSUIImageToOFImage(generatedImage, imageOF, size.width, size.height);
            images.push_back(imageOF);
            CGImageRelease(image);
        }
    }
#endif
}