Undo OptimizeTransLayer in gifs

[sjeddie]

Hi, I'm looking at the RMagick documentation for ImageList, under method "optimize_layers", one of the options is:

OptimizeTransLayer
Given a GIF animation, replace any pixel in the sub-frame overlay images with
transparency, if it does not change the resulting animation by more than the
current fuzz factor. This should allow a existing frame optimized GIF animation
to compress into a smaller file size due to larger areas of one (transparent)
color rather than a pattern of multiple colors repeating the current disposed
image of the last frame.

I'm trying to go backwards - that is, take a gif image that has this optimization, and extract out its frames in full. Is there an easy way to reverse this with ImageMagick?

Link to ImageList: http://www.imagemagick.org/RMagick/doc/ilist.html

[fmw42]

see -coalesce

http://www.imagemagick.org/script/comma ... p#coalesce
http://www.imagemagick.org/Usage/anim_basics/#coalesce

[sjeddie]

Awesome. Thank you!