ReactOS is probably a good indicator how far you can get with some limited generic drivers.
ReactOS is probably a good indicator how far you can get with some limited generic drivers.
As a CLI there is gifsicle or imagemagick.
As a gui maybe gifcurry, tupitube or some other 2d animation tool https://en.wikipedia.org/wiki/List_of_2D_animation_software
For Linux maybe timekpr-next and some custom scripts to sync the time with the time limit server?