  Despite recent advances in syncing lip movements with any audio waves,
current methods still struggle to balance generation quality and the model's
generalization ability. Previous studies either require long-term data for
training or produce a similar movement pattern on all subjects with low
quality. In this paper, we propose StyleSync, an effective framework that
enables high-fidelity lip synchronization. We identify that a style-based
generator would sufficiently enable such a charming property on both one-shot
and few-shot scenarios. Specifically, we design a mask-guided spatial
information encoding module that preserves the details of the given face. The
mouth shapes are accurately modified by audio through modulated convolutions.
Moreover, our design also enables personalized lip-sync by introducing style
space and generator refinement on only limited frames. Thus the identity and
talking style of a target person could be accurately preserved. Extensive
experiments demonstrate the effectiveness of our method in producing
high-fidelity results on a variety of scenes. Resources can be found at
https://hangz-nju-cuhk.github.io/projects/StyleSync.
