Converted Animation.GIF To .BIN file for Atari ST1BPP? for demo in the music keyboard

[Galaxy76]

Hi everyone, I'm new here. I plan to do something interesting from my point of view. I have a 1998 Generalmusic music keyboard. Its firmware was designed around Atari.
I would like to be able to change the DEMO and then customize it.
the DEMO was certainly made with an 8-bit animated GIF for a 320x240 display. I can easily download the file within the software that takes care of this DEMO. It is a file called IMG_RES.BIN which is approximately 1.3 MB.
My question is:
how can I convert an animated GIF into a .bin file that is read correctly by my music keyboard? Again, consider the fact that the firmware / software is very similar to atari.
What do you suggest? where can i start?

I analyzed the original.bin file with the binxelview program (see image), and it is most likely in atari ST1BPP format.



If I can I would like to attach the original IMG_RES.BIN file of the DEMO, so that you can analyze it and understand how I could create one with the same characteristics.

1.png

for clarity this is the original demo, which I would like to replace.
https://youtu.be/vrd-IlDIZIk

[Galaxy76]

the original file is attached. I actually have two of these demos. I put them both

as they are found within the software and within subfolders

USE 7-ZIP FOR OPEN FILE