I was trying to troubleshoot why my textures weren't animating on my model even though I seem to have done everything right. That was until I decided to double check with Optifine and saw that animated textures just weren't supported in ETF.

It'd be nice if ETF had functionality with Optifine's "anim" folder and .properties files.

Within Optifine, .properties files are formated as such:
from=
to=
x=
y=
w=
h=
duration=
interpolate=<true|false>
skip=

(If there's a different way to get animated textures working on custom models, please let me know. I've been at this for a few hours.)

the mod animatica does this

I see you responded and deleted the comment but just incase you didn't figure it out, the section in the animatica mod description saying it doesn't support CEM models is saying that animatica itself doesn't do them, because people often come to these mods that do a part of optifine and ask if they do all of it.

case in point this issue :)