the dependence of zbarimg on the width and height of the image

[kkkaktusss]

it happens that at a certain image size, the qr code is not recognized (well, let's say I save a png with a size of 2480 wide and 3508 high), and then I change the size (I recreate the png with a new width and height, let's say 1604 width and 2284 height) and everything works. Is there any explanation for this? also, at the first iteration (2480 3508), I try to throw a cropped image (900 1300) does not recognize anything either