🎬 KLING AI ⏱ 3 min read 🎤 Advanced Lip Sync

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Make anyone in a video say anything — upload a video and an audio file or type the words, and the AI syncs the lip movements perfectly to match the speech

Advanced Lip Sync makes any person in a video appear to speak any audio you provide. Upload a video where a face is clearly visible, then choose how to provide the speech: upload your own audio file, or simply type the words and let the AI generate the voice for you.

The AI detects all faces in the video automatically. If there are multiple people, you select which face to animate. The selected face gets frame-accurate lip movements that match every syllable of the audio — jaw movement, mouth shape, and timing all synchronized naturally.

Two audio options make this flexible. Upload Audio lets you use any recording — your own voiceover, a translated narration, a song, or a clip from another source. Type Text mode lets you write what the person should say, pick a voice from the catalog, choose a language and emotion, and the AI generates the speech and syncs the lips in one step.

Volume controls let you balance the new speech against the original video audio — keep the background sounds while adding the new voice, or mute the original entirely. Timing controls let you choose exactly when in the video the speech begins and crop the audio start and end points.

This is the key tool for dubbing content into other languages, creating AI spokesperson videos, adding voiceover to silent clips, and producing multilingual versions of the same video.