We present VideoReTalking, a new system to edit the faces of a real-world
talking head video according to input audio, producing a high-quality and
lip-syncing output video even with a different emotion. Our system disentangles
this objective into three sequential tasks: (1) face video generation with a
canonical expression; (2) audio-driven lip-sync; and (3) face enhancement for
improving photo-realism. Given a talking-head video, we first modify the
expression of each frame according to the same expression template using the
expression editing network, resulting in a video with the canonical expression.
This video, together with the given audio, is then fed into the lip-sync
network to generate a lip-syncing video. Finally, we improve the photo-realism
of the synthesized faces through an identity-aware face enhancement network and
post-processing. We use learning-based approaches for all three steps and all
our modules can be tackled in a sequential pipeline without any user
intervention. Furthermore, our system is a generic approach that does not need
to be retrained to a specific person. Evaluations on two widely-used datasets
and in-the-wild examples demonstrate the superiority of our framework over
other state-of-the-art methods in terms of lip-sync accuracy and visual
quality.

VideoReTalking 提供一种新的编辑现实中的人物对话视频的系统来生成高质量的、与输入音频同步的视频，其中包括三个连续的步骤：生成具有规范表情的面部视频、音频驱动的口型同步和面部增强。该系统可以处理所有三个步骤，且不需要任何用户干预，适用于任何人物并可以在大规模数据集上获得最高的潜在精度和视觉质量。