barkeser2002/VMD-Motion-Optimizer

mirror of https://github.com/barkeser2002/VMD-Motion-Optimizer.git synced 2026-09-25 04:30:15 +03:00

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T

Barış Keser f8512adde5 Add VMD Motion Optimizer and supporting scripts

- Implemented `optimize_vmd.py`, a comprehensive VMD motion optimizer that includes features for position and rotation simplification, depth alignment removal, and ground stabilization.
- Introduced `peek_bytes.py`, a utility script for inspecting byte data from VMD files.
- Created `version.txt` to track the version of the VMD Motion Optimizer, initialized to 0.1.0.

2025-08-17 21:48:36 +03:00

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VMD Motion Optimizer by Barış Keser (barkeser2002)

VMD Motion Optimizer is a tool to optimize MikuMikuDance (MMD) .vmd motion files using smart heuristics. It reduces position/rotation keys, removes depth alignment, and applies ground stabilization.

Author: Barış Keser (barkeser2002)
License: GNU General Public License v3.0 (GPL-3.0) — see LICENSE
Version: see version.txt

Features

RDP-like curve simplification for position
Quaternion SLERP-based angular-error simplification for rotation
Morph key reduction
Depth (Z) alignment removal: measure from root, apply global translation to all bones
Ground (Y) stabilization: global translation based on per-frame min Y (feet/all bones selectable)
PyQt6 GUI with profiles
Portable builds via PyInstaller (Windows)

Install (CLI)

Python 3.11/3.12 recommended
Virtualenv + deps:
- py -3 -m venv .venv
- .venv\\Scripts\\pip.exe install -r requirements.txt

CLI Usage

python scripts/optimize_vmd.py input.vmd -o output.vmd \
  --pos-eps 0.05 --rot-eps-deg 0.5 --morph-eps 0.001 \
  --remove-depth --depth-smooth 3 --depth-scale 1.0 \
  --stabilize-ground --ground-target-y 0.0 --ground-smooth 5 --ground-scale 1.0 \
  --ground-all-bones

GUI

python scripts/app.py

Build

CMD: build_exe.bat (portable folder at dist/VMDOptimizer)
PowerShell: build_exe.ps1

Notes

Some VMD headers may be non-standard/corrupted; the reader attempts auto-fix.
Camera/light blocks are currently not preserved (written as 0).
If model name is “XR Animator”, it’s replaced with “Barış Keser” by default (configurable via CLI).

Credits