Very bored unfinished Death Star needs revitalization - Java GIF recycle

In My RTS, I'm finally doing some decent graphics work after the in-Game engine is proceeding nicely.
This attached unfinished Death Star animated GIF works. (using it as a test image)
The original one (small) unfds.gif turns perfectly as a Java Image object, in its 30 frames. and resets to the beginning once the frames cycle to completion.
but, if I double the size in Mac Preview app, unfDSbigger.gif, it still has 30 frames and is ready to work, but as a Java Image object, it stops the gif frame flipping at the end and doesn't recycle to the beginning and is stuck (bored) The small GIF works fine, but the same code with the bigger file doesn't.

Maybe the preview app doesn't correctly resize animated GIF's? It is twice as big, but only turns once, and doesn't restart, to continue turning,  smoothly.

The GIF's are attached
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beavoidAuthor Commented:
This attached cyborg animated GIF works perfectly when substituted for the bored Death Star, so this is very strange.
mccarlIT Business Systems Analyst / Software DeveloperCommented:
As per this page ( I just inserted the application extension to indicate that the animation should be looped and it now works for me. See how it goes for you...

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beavoidAuthor Commented:
Wow, thanks.
Works perfectly, in browser and Java game window.

How could the assertion not have been there?
Did the resize misplace it? you think?
Thanks so much.
My bored Death Stars have been revitalized.
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beavoidAuthor Commented:
mccarlIT Business Systems Analyst / Software DeveloperCommented:
You're welcome!

Did the resize misplace it? you think?
Well it may be pretty obvious but I'd say it's a good bet that the resize did it.
beavoidAuthor Commented:
I agree.

Interestingly enough, the image is not centered, and the frame size is not appropriate for the size of the circle.
Might you able to change the frame size to be square around the circle, without changing the aspect ratio, such that when it is selected, the width and height values cause the selection rectangle to be the correct size?
mccarlIT Business Systems Analyst / Software DeveloperCommented:
You would need an image editing program (one that supports animated GIFs) to crop the image to the desired size.
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