README.md

metadata

title: ARDY Motion Playground
emoji: 🕺
colorFrom: gray
colorTo: purple
sdk: gradio
sdk_version: 6.20.0
app_file: app.py
short_description: Text-to-motion with an interactive 3D skeleton playground
python_version: '3.12'
startup_duration_timeout: 1h
pinned: false
preload_from_hub:
  - unsloth/llama-3-8b-Instruct
  - McGill-NLP/LLM2Vec-Meta-Llama-3-8B-Instruct-mntp
  - McGill-NLP/LLM2Vec-Meta-Llama-3-8B-Instruct-mntp-supervised
  - nvidia/ARDY-Core-RP-20FPS-Horizon40
  - nvidia/ARDY-G1-RP-25FPS-Horizon52

ARDY Motion Playground

Interactive text-to-motion demo for ARDY (Autoregressive Diffusion with Hybrid Representation for Interactive Human Motion Generation, NVIDIA, SIGGRAPH 2026).

Pick a rig (human or robot), type a natural-language prompt, generate a 3D motion clip, then orbit, scrub, and play it in the built-in Three.js playground (play/pause, timeline scrubber, speed control, loop, and a root-trajectory trail).

• Human rig: nvidia/ARDY-Core-RP-20FPS-Horizon40 — 27-joint "Core" skeleton at 20 fps.
• Robot rig: nvidia/ARDY-G1-RP-25FPS-Horizon52 — 34-joint Unitree G1 humanoid robot at 25 fps (same rig as the sibling Space hugging-apps/ardy-g1-motion-generation).
• Text encoder: LLM2Vec-Llama-3-8B using the public unsloth/llama-3-8b-Instruct base plus the original McGill MNTP and supervised adapters. No Meta-gated base-model access is required.
• Hardware: ZeroGPU.

Post-processing (foot-skate cleanup, which needs a compiled C++ extension) is disabled in this demo; generation uses the model's autoregressive path directly.

Based on the nv-tlabs/ardy reference implementation (scripts/generate.py).

Blender export

Open Blender export to generate three downloadable files:

• ardy_motion.bvh — directly importable with Blender's BVH importer.
• ardy_motion.npz — complete ARDY output including joint positions, local and global rotations, root trajectory, and foot contacts.
• metadata.json — prompt, seed, FPS, skeleton hierarchy, and coordinate-system information.

The programmatic endpoint is /generate_blender. The existing /generate endpoint and Three.js playground remain available.

The base and adapter repositories can be overridden with the Space variables LLM2VEC_BASE_MODEL, LLM2VEC_MNTP_MODEL, and LLM2VEC_SUPERVISED_MODEL.