Quote:....Also, is there any method transition effects like " dissolve ", " fade " etc while creating GIF ? I am hoping that someone has written a script for the same.
Looking at some possibilities for animation transitions, for Gimp the G'mic plugin http://www.gmic.eu in the Sequences section the filter Spatial Transition. This has several options + a custom formula option to play with.
Not Gimp and Linux (or Mac) only. An ImageMagick bash script from http://www.fmwconcepts.com/imagemagick/transitions/ Very hands on but you make the transition mask therefore you can make your transitions unique.
Attached a pair of small 200x200 examples in webp format, gif animations tend to be too large to attach. All 15 frame transitions, need something smoother, increase the number of frames ( = even larger gif file). It is a bit strange since it produces an optimised gif by default.
edit: an easier view as a video: gmic on the left / IM on the right: https://i.imgur.com/P4tk0vb.mp4