Make an UIImage from a CMSampleBuffer

Question

This is not the same as the countless questions about converting a CMSampleBuffer to a UIImage. I\'m simply wondering why I can\'t convert it like

Answer 1

For JPEG images:

Swift 4:

let buff: CMSampleBuffer ...            // Have you have CMSampleBuffer 
if let imageData = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: buff, previewPhotoSampleBuffer: nil) {
    let image = UIImage(data: imageData) //  Here you have UIImage
}