Not sure if GIF has a “default” palette but it does have a global palette per file and each frame can have its own “local” palette. That way each frame can have its own personalized 256 colors and more accurately represent the source material. It bloats the filesize though as one would expect when adding up 256 x 3 (RGB) x NumberOfFrames bytes instead of just 256 x 3 bytes (just for palette data). Filesize can further bloat by using dithering which is effectively adding randomness to each frame and compression generally doesn’t do well the more random the data is. End result is a great looking GIF but at this point, why aren’t you using a proper video codec? :D
Not sure if GIF has a “default” palette but it does have a global palette per file and each frame can have its own “local” palette. That way each frame can have its own personalized 256 colors and more accurately represent the source material. It bloats the filesize though as one would expect when adding up 256 x 3 (RGB) x NumberOfFrames bytes instead of just 256 x 3 bytes (just for palette data). Filesize can further bloat by using dithering which is effectively adding randomness to each frame and compression generally doesn’t do well the more random the data is. End result is a great looking GIF but at this point, why aren’t you using a proper video codec? :D