Threlte Live - 3D VRM Avatar Streaming Platform

A SvelteKit application for live-streaming 3D VRM avatars with AI-powered chat, text-to-speech, mixamo animations.

Click to see showcase video

Features

• Threlte/Three.js for 3D rendering
• VRM avatar loading and animation with @pixiv/three-vrm
• Google Generative AI for conversational responses
• Text-to-speech with lip-sync
• Chat interface
• Mixamo animation integration

See roadmap.md for full details and planned features.

Text-to-Speech and Phonemes

The project uses ElevenLabs TTS with phoneme timings for VRM lip-sync.

Learn more:

• What is a Phoneme
• Prompting Controls

Phonemes mapped: A, AA, AH, AE, AO, AW, AY, E, EH, ER, EY, I, IH, IY, O, OH, OW, OY, U, UH, UW, M, B, P, F, V, TH, L, R, NEUTRAL.

Getting Started

Prerequisites

• Node.js >= 18
• pnpm

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/svelte-vrm-live.git
   cd svelte-vrm-live

2. Install dependencies:

   pnpm install

Environment Variables

Set the following environment variables (for example, create a .env file in the project root):

# Google Generative AI
GOOGLE_API_KEY=your_google_api_key

# ElevenLabs Text-to-Speech
ELEVENLABS_API_KEY=your_elevenlabs_api_key

These keys are required for the chat and text-to-speech features.

Developing

Start the development server:

pnpm dev

Open http://localhost:5173.

Building

Build for production:

pnpm build

Preview:

pnpm run preview

Keywords

svelte, sveltekit, threejs, threlte, vrm, 3d-avatar, ai-chat, text-to-speech, lipsync, phonemes, mixamo, animations, blockchain, solana, generative-ai, youtube-streaming

Contributing

We welcome contributions! Before we can merge your first pull request you must sign our Contributor License Agreement (CLA). When you open a PR, GitHub will display a message from the CLA bot with a link to sign.

• Individual contributors: see docs/CLA_INDIVIDUAL.md
• Companies/corporations: see docs/CLA_CORPORATE.md

Once the CLA is signed, the status check will update automatically, and we’ll be able to review your contribution.

License

AGPL (see LICENSE file)