Live2D Animation Query

[Encrtia]

I noticed at this thread viewtopic.php?t=36951, PyTom converted a .gif to 2 serparate .webm files - normal & mask.

Either during, or after, an animation creation, how can I go about doing the same?

If during, would I be able to export the 2 from software like Live2D? Or after, can I run a .gif through a "mask splitter" that'll do the above?

Or is this process bespoke to Ren'Py, thus conversion is a manual process of having a transparent/white background for the .gif with coloured animation, then recreating it with a black background, with white animation

[Imperf3kt]

You create your movie with a black background and another with no foreground and a white background. The second is your mask file and it will turn the black area of the first video, transparent.
At least that's what I know of it, I may be mistaken, having never used it.

Regarding Live2D, I believe there was work on it but I cannot remember what state it's in. I believe there was a patron article about it.
https://patreon.renpy.org/dev-2020-05.html
https://www.patreon.com/posts/37740261
There is also this, https://github.com/asfdfdfd/renpy-live2d

[Encrtia]

Thanks for the response Imperf3kt.

I can see work's still being undetaken in the latest Developer Update [url]C:\Users\encrt\Dropbox\!) Story\Ren'Py Projects\Battle Astral\game\images[/url] which is nice to know.

Just querying on the black background & no foreground/whitebackground - how is that done though? I'm standing from a hypothetical standpoint of how/where to proceed next, so just trying to understand before committing. Is this just an option in Live2D? Or other software that aids this process of an existing/exported movie?