# fudan-generative-vision/hallo

Hallo: Hierarchical Audio-Driven Visual Synthesis for Portrait Image Animation

Repository: https://github.com/fudan-generative-vision/hallo
Canonical: https://ross.abutalabs.com/products/hallo
Homepage: https://fudan-generative-vision.github.io/hallo/
Language: Python
License: MIT
License Family: permissive
Topics: face-animation, image-animation, video-animation
Last push: 2024-09-14T13:23:02+00:00

## Health v2 (maintenance only)
Score: 14/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 58
- inputs: {"age_days": 812, "days_push": 718, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8664, forks 1120 (observed 2026-08-28T04:10:24.087797+00:00)

## What it is
Hallo is a Python research library implementing hierarchical audio-driven visual synthesis for animating portrait images into talking-head videos. It uses diffusion-based models to generate lip-synced, expressive facial animation from a single reference image and an audio clip.

## Use cases
- animate a portrait photo with audio to make a talking head video
- generate lip-synced video from a single image and speech audio
- create talking avatar videos from still photos
- make a digital human speak from an audio file
- research audio-driven face animation with diffusion models

## When to choose
- you need to animate a single portrait image into a talking video from audio
- you want a research-grade open-source talking-head generation model
- you have GPU resources and want to run inference locally or via HuggingFace

## When to avoid
- you need real-time lip sync for live streaming or video calls
- you lack a GPU and cannot run heavy diffusion inference
- you need full-body or multi-person video animation rather than portraits

## Facets
- artifact type: library
- maturity: active
- function: video-processing, machine-learning, deep-learning, audio-processing, image-processing
- domain: artificial-intelligence, computer-vision, deep-learning
- platform: python
- tags: talking-head, portrait-animation, audio-driven, diffusion-models, lip-sync, generative-ai, video, audio, gpu, linux

## Member repositories
- fudan-generative-vision/hallo (main) score 14

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:24.087797+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:25:38.235646+00:00, confidence not recorded.
  - readme: https://github.com/fudan-generative-vision/hallo (fetched 2026-08-28T04:10:24.087797+00:00, sha 209556a6477c)
  - homepage: https://fudan-generative-vision.github.io/hallo/ (fetched 2026-08-29T08:26:01.500341+00:00, sha c2c03274d463)
- Data as of 2026-08-30T08:39:29.467469+00:00.