GIMP -> Filters -> Animation -> Unoptimize

[jasonkhanlar]

Is there a method in the API to convert all the frames to unoptimized frames so it is easier to edit them and not deal with strange animation sequence artifacts?

e.g. A method in which ALL (excluding the first) frames are converted full width/height dimensions and contain duplicate pixel RGBA values for any preceding layer where otherwise it may have been transparent with a combined disposal method, to be changed to replace disposal method, etc.

For example see: https://graphicdesign.stackexchange.com/questions/55311/how-can-i-modify-a-gif-that-uses-cumulative-layers

Also see: https://www.npmjs.com/package/imagemin-giflossy
unoptimize

Type: boolean
Default: false

Unoptimize GIF animations into an easy-to-edit form.
e.g.:

imageminGiflossy({ unoptimize: true });

edit/update: As a technicality, it is possible to create GIF images where the first frame/layer is not the full dimensions of the image.

[jtlapp]

Sorry, I haven't written such a method. Feel free to do so, with tests.