SlopFormer

SlopFormer is a sprite pipeline + web demo for building game-ready character animations from generated video and curated frames.

Live Demo

• https://hgosansn.github.io/slopformer/

What It Does

• Generates animation clips (local CogVideoX or external video source)
• Extracts frames at controllable fps
• Lets you manually prune bad frames
• Removes backgrounds to transparent PNG
• Builds normalized spritesheets + metadata
• Previews characters in-browser with movement/jump logic

Quick Start

# 1) extract frames from an animation clip
python3 extract_frames.py work/trex/jump.mp4 --character trex --fps 4

# 2) remove backgrounds
python3 remove_bg.py --character trex

# 3) refresh character metadata
python3 init_metadata.py --character trex --fps 4

# 4) build jump spritesheet
python3 build_spritesheet.py --character trex --animation jump --size 128

Then open index.html.

Docs

• Pipeline details: PIPELINE.md

Deployment

GitHub Pages auto-deploys from main via .github/workflows/pages.yml.