Hallo is an audio-driven talking head generator and portrait animation framework. It synchronizes a static portrait image with an audio file to produce realistic talking head videos by mapping audio spectral features to facial expressions and lip movements.
The system utilizes a diffusion video synthesis model that employs iterative denoising and latent representations to generate temporally consistent video frames. It incorporates identity-preserving feature extraction and latent space motion modeling to maintain visual consistency and control facial poses.
The toolkit provides capabilities for AI character animation and the synthesis of facial motion. It also includes tools for deep learning model training, allowing for the optimization of synthesis pipelines using custom datasets and configuration files.
