Lip Sync
In short: Lip sync is the alignment of mouth movements with spoken audio, achieved either manually in traditional animation or automatically using AI models that modify video to match a given audio track.
About Lip Sync
Lip sync (short for lip synchronization) is the foundational concept behind this entire technology space. In film and animation, lip sync has historically required frame-by-frame manual adjustment to ensure that a character or performer's mouth movements match the dialogue being spoken.
AI lip sync automates this process by analyzing speech audio and generating corresponding mouth shapes on a target face in video. Modern AI lip sync platforms like Sync (sync.so) can produce accurate results in seconds, enabling use cases from multilingual dubbing to talking-photo content creation that were previously impractical at scale.
How Lip Sync Connects to Lip Sync
Lip Sync relates to several other concepts in the AI lip sync pipeline: Viseme , and Audio-Driven Animation .
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Experience studio-quality lip synchronization for videos in any language.