Character get fatter when using Motion Tracker. Why?

[mooseygoosey]

When I use Motion Tracker in Character Animator, I notice the torso gets a little more wider, making my character look fatter than what I drew in Illustrator.

It's something I've ignored since I started using it, but it's really bugging me now.

I feel like I've rigged everything correctly.

Screenshots attached.

Puppet here (can't attach .puppet files): https://drive.google.com/file/d/1pudQlWlLjkX-P0qqJ_No6FT4FnN3Knpj/view?usp=sharing)

Can anyone help with not making my character fat with Motion Tracker?

[mooseygoosey]

I think I sort of figured it out - had to stretch the waist a bit longer, and added more overlap between the legs and waist.

It still makes the character pudgy, but not as much as before.

[oksamurai]

Yeah, I've found that playing around with the waist, hips, shoulder, and neck tags can have a dramatic effect on how your character moves with motion library. You may also want to experiment with the tracked handles section to uncheck some of these handles and see what it does.