You can try this for the effect, but I am not sure how performant it would be:
Edit: Seems that you could import a video as well then use a MediaPlayer and MediaTexture. Simply replace the the current normal texture with the MediaTexture, and it should work as well. I haven’t tried it, but I managed to get the texture into the material editor with a simple drag and drop.
I think this is more optimized to use a video than using multiple textures and flipbooks.