Sync Lipsync-2

Use cases

• Match a new narration, translated audio, or revised voiceover to existing talking-head footage.
• Create a lip-synced product demo, founder clip, or UGC-style ad draft from public video and audio URLs.
• Compare sync modes when the source video and audio track have different lengths.
• Use active-speaker detection for multi-person footage where the speaking person should be followed.

Input tips

• Provide public video_url and audio_url values that can be fetched without login.
• Keep the speaker's face and mouth visible; clean source footage helps lip movement.
• Choose sync_mode based on whether shorter media should bounce, loop, trim, silence, or remap.
• Use temperature to make mouth movement more expressive or more subtle.
• Leave active-speaker detection on for multi-person clips unless you need fixed behavior.
• Enable occlusion detection when hands, microphones, or objects may cover the mouth.

Expected output

Caveats

• Source video and audio URLs must be public and reachable.
• This AI Tool does not generate or edit the audio track; provide the final audio separately.
• Face visibility, audio timing, video resolution, motion, and occlusions affect the result.
• Duration mismatch settings can loop, trim, bounce, silence, or remap content; review final timing.
• Use Sync Lipsync-2-Pro when facial details, beards, teeth, or mouth obstructions need the highest preservation.
• Generated lip movement should be reviewed for realism, brand fit, and rights-sensitive footage.