When Aseprite opens a gif which has a single global color table, it will re-index pixels in some of the frames when they share RGB values with other indices in the color table.
In this gif, the palette is 256 copies of black, but the 2 frames are indexed to color 240 in the table. When Aseprite opens it, frame 1 is all indexed as 240, but in frame 2, all the pixels are re-indexed to 1 since it's also black.
Expected/preferred behavior: When Aseprite opens a gif with only a global color table, the colors are copied from the color table to the current palette, and the indices across all the frames are left alone and copied in as-is.
Aseprite and System version
- Aseprite version: v1.2.34.1-x64, installer
- System: Windows 10 Home
When Aseprite opens a gif which has a single global color table, it will re-index pixels in some of the frames when they share RGB values with other indices in the color table.
In this gif, the palette is 256 copies of black, but the 2 frames are indexed to color 240 in the table. When Aseprite opens it, frame 1 is all indexed as 240, but in frame 2, all the pixels are re-indexed to 1 since it's also black.
Expected/preferred behavior: When Aseprite opens a gif with only a global color table, the colors are copied from the color table to the current palette, and the indices across all the frames are left alone and copied in as-is.
Aseprite and System version