Save sampleBuffer in array (AVFoundation)

Question

I try to save the sample buffer instead of an UIImage to an array, to convert it later on. This to speed up the image capturing and maybe not get memory warnings. I just can't figure out how to save it to the array and then use it again to call [self imageFromSampleBuffer:sampleBuffer]. I tried something like this, but how do I convert the data back to a CMSampleBufferRef object?

- (void)captureOutput:(AVCaptureOutput *)captureOutput 
    didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer 
   fromConnection:(AVCaptureConnection *)connection { 
// Create a UIImage from the sample buffer data
//      UIImage *image = [self imageFromSampleBuffer:sampleBuffer];
//      [arrCaptures addObject:image];

[arrImageBuffer addObject:[NSData dataWithBytes:sampleBuffer length:sizeof(sampleBuffer)] ];}

Answer 1

Why not just use a CFArray and directly put the CMSampleBufferRef objects in there?