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# That's a good point.
It means the gif can just say 'keep this bit the same' rather than having to describe the whole image again.
(I helped save b3ta! my other username is a porsche , posting shit pictures so you don't have to, Sun 10 Feb 2008, 20:05, archived)
# Although they need to be the same layer.
Two identical layers are likely to be as big as two different ones, assuming the same colours.
(I helped save b3ta! LordManley twitter.com/LordManley, Sun 10 Feb 2008, 20:11, archived)
# How strange.
(I helped save b3ta! my other username is a porsche , posting shit pictures so you don't have to, Sun 10 Feb 2008, 20:15, archived)
# in the resulting GIF you only have one layer per frame.
any decent gif animation package should optimize that no matter how things were arranged in the source files.

worst case scenario, assuming your gif writing software doesn't work like that: just run the gif through GIMP's "optimize for gif" or gifsicle or something like that.
(I helped save b3ta! but the hedgehog can never be buggered at all foreskin of the apocalypse, Sun 10 Feb 2008, 20:22, archived)
# this is all
unusually constructive, peeps. cheers
(the_whore_of_mensa You are John Venables, and I claim my ten pounds!, Sun 10 Feb 2008, 20:25, archived)
# in the gif,
when saved, all the stuff that remains the same per frame is discarded after the first frame that uses it.
(I helped save b3ta! Pasanonic 's been known to cause insanity in laboratory mice, Sun 10 Feb 2008, 20:25, archived)
# Indeed,
but I find that images which are the same do not optimise as well as if you delete all the same bits from the subsequent layers and have a transparency through to the base layer.

I am not wording this well, bear with me.
(I helped save b3ta! LordManley twitter.com/LordManley, Sun 10 Feb 2008, 20:29, archived)
# IF the resulting pixels are exactly the same, it shouldn't matter
but when you're working with many "same" layers it's pretty easy to much up somewhere and I do sometimes do what you're describing here (I think) to make it easier on myself.
(I helped save b3ta! but the hedgehog can never be buggered at all foreskin of the apocalypse, Sun 10 Feb 2008, 20:39, archived)
# Yes, I have experimented with two versions of this:


I was wrong.
(I helped save b3ta! LordManley twitter.com/LordManley, Sun 10 Feb 2008, 21:22, archived)
# Yeah
it was a bit rushed. just imagine they're on a boat
(the_whore_of_mensa You are John Venables, and I claim my ten pounds!, Sun 10 Feb 2008, 20:11, archived)
# /imagines
:)
(I helped save b3ta! but the hedgehog can never be buggered at all foreskin of the apocalypse, Sun 10 Feb 2008, 20:22, archived)