Render Size question [question]  #89

Hi!

Thanks for the awesome tool

I was reading a code related to the video cropping.
There is one thing I can't wrap my head around

CGSize(width: 16 * videoCropView.aspectRatio.width * 18,
                                height: 16 * videoCropView.aspectRatio.height * 18)

Could you please explain why we need to multiple aspectRatio by 16 and 18 ?

and why scale is determined by dividing width on width
let renderScale = renderSize.width / cropFrame.width

Thanks!