Questions and postings pertaining to the development of ImageMagick, feature enhancements, and ImageMagick internals. ImageMagick source code and algorithms are discussed here. Usage questions which are too arcane for the normal user list should also be posted here.
GIF optimization removes parts of the frames to optimize. So you need to coalesce your frames to fill them out to the same size. Then at the end re-optimize. Also in ImageMagick 6 and 7, you need to put the input image first. This works for me on IM 6.9.10.40 Q16 Mac OSX.