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April 21, 2026

Out of Milk - Shape Key for Breathing

Greetings SizeCitizens, SizeSerfs and SizePeasants!

One thing that I was missing in the toolset for animating people is breathing. Blinking, facial expressions and lip syncing are all very useful, but breathing can really help elevate a shot and make a character feel much more human.

Sadly, there isn't anything built into the conversion and rigging toolkit I currently use, so I built one myself. It's a shapekey in blender, controlled by a specific bone in the rig, that I linked using driers, and then I copy the shapekey across to any clothing that the character wears so that it's all controlled by the same thing.

It took me a second to figure out how to properly link them up, but I'm pleased with how this looks! I think when combined with mocap and facial animation, it should help make shots look that extra bit more immersive!

Thanks,

SizeKing.

3.75 MB file on MEGA (Mega)

Comments (4)

J
Jakken Haggar · April 24, 2026

Superb work on the details! The likes of this or tighter/shorter clothes after a growth turn a good clip into an impressive ones.

N
Natkuri · April 22, 2026

I think it looks great!! The one thing is that, to me, it looks quite slow?? (Which I get could be intentional in just a test rigging!!) I like to do that kinda subconscious thing when watching a show/movie where if a character is underwater I hold my breath until the resurface. And I tried matching my breath to this clip, and holy cow my lungs ached lol. But nonetheless!! The breathing does make it feel less static and gives a nice natural feel to it!

S
SizeKing · April 22, 2026

That's totally fair, I didn't time the keyframes between breathing the way I would do with motion capture, it was mostly arbitrary >.< I think you'll be happy to know that when I implement this in tandem with motion capture, it will definitely be more realistically timed haha

t
tntfists · April 21, 2026

This is subtle and very very cool