The Wav2Lip UHQ extension for Automatic1111 is a comprehensive solution that enhances the quality of lip-sync videos generated by the Wav2Lip tool. By utilizing specific post-processing techniques with Stable diffusion- it ensures improved results. To use this extension- users need to have the latest version of Stable diffusion webui automatic1111 and FFmpeg installed. Additionally- they must download and place several model weights in the appropriate directories. Once the installation is done- users can simply select a video and an audio file- and the tool will generate a lip-sync video.