---
title: Video-Coder
emoji: 🎬
colorFrom: yellow
colorTo: pink
sdk: gradio
sdk_version: 6.31.0
app_file: app.py
short_description: Agent writes Blender code to build a 3D draft video
python_version: "3.12"
startup_duration_timeout: 1h
license: apache-2.0
models:
  - Video-Coder/Video-Coder-9B
---

# Video-Coder

Demo of [Video-Coder: Reinforcing Agentic Coding for Video Generation](https://huggingface.co/papers/2611.09894)
([code](https://github.com/CYWang735/Video-Coder), [model](https://huggingface.co/Video-Coder/Video-Coder-9B)).

**Video-Coder-9B** runs inside a port of the authors' *Video-Coder Harness*: it writes a Blender 4.5 Python script
for the scene description, renders it (`run_blender`, bpy 4.5.14 / Workbench on CPU), looks at the rendered frames,
fixes problems and submits. The output is the **draft video** (white-model render with the scene's layout, motion and
camera).

The paper then turns the draft video into a final video with MiniMax-H3 (Ref2VA). That ~33B audio-video generator
(plus its large text encoder) does not fit alongside the agent in this Space, so this demo stops at the draft video.

The harness code in `harness/` is taken from the Video-Coder repository (`Video-Coder-RL/uni-agent`, Apache-2.0).
Example prompts are from the Video-Coder project page and repository.