Sprite Animation Problem

I am trying to create a sprite animation.

I have a .SWF file convert into---->individuals .png files(each 200x200 px)------->create an imagesheet.

When background of the images is colorfull , imagesheet looks correctly, each frame is same size, lined up directly on top of each other on the imagesheet and sprite plays correctly on screen,

while when i choose to have a transparent background, size of each individual image remains still the same 200x200, but when i convert it to an imagesheet images do not stand lined up one on top of the other;

which makes the animation to run pretty weird on the screen. I am using texturepacker to achieve the imagesheet.

Do you have any idea why this happen, please?

I would double check your individual png files and make sure that some autocropping hasn’t occurred with those that have a transparent background. 

I would double check your individual png files and make sure that some autocropping hasn’t occurred with those that have a transparent background.