AI Lip Sync
Make a talking-head video match new speech and get a private MP4 back. This AI lip sync tool runs Sync Lipsync 2 and costs 12.5 credits per second of video.
- Sync Lipsync 2
- 12.5 credits per second
Sync your video to speech
Upload video and speech → confirm permission → review the quote → download MP4.
Checking availability…
Sign in to upload and recover your resultsSync Lipsync 2 · Use one clearly visible speaking face. Trim speech and video to matching lengths (within 0.25 seconds). No automatic looping. Output requires visual and listening checks.
3. Your result
Your processed video will appear here. Recent jobs are saved to your account below.
About AI lip sync on Cicadas
Upload a video with one clearly visible speaking face plus your replacement speech, and this AI lip sync tool uses Sync Lipsync 2 to match the face to the new audio. You get a private MP4. Before you lip sync a video, the server measures both files and shows the exact credit quote, and nothing is charged until you confirm.
Why use Cicadas for AI lip sync
Lip sync a video to replacement speech
Upload a video of up to 60 seconds with one clearly visible speaking face, plus new speech as MP3, WAV or M4A, up to 60 seconds and 20 MB. Sync Lipsync 2 matches the face to that audio.
Lip sync priced per second, quoted first
Pricing is 12.5 credits per second of video, so a 5.04-second clip is 64 credits (rounded up). The server measures both files, shows the exact quote for 5 minutes and charges only when you confirm.
Get a private lip-synced MP4
Results are private MP4s listed under Recent jobs (your latest 20). Leave while it processes and sign in again later to download it, then check lip timing and audio before you use it.
How to use AI lip sync
- 01
Sign in, upload a video with one clearly visible speaking face and your replacement speech (MP3, WAV or M4A), and confirm you have permission for the face, video and voice.
- 02
Review the exact quote, 12.5 credits per second of video and valid for 5 minutes; if the two lengths differ by more than 0.25 seconds, trim them and upload again.
- 03
Confirm, then download the new MP4 and check lip timing and audio, or reopen it later from Recent jobs (your latest 20).
AI lip sync prompt ideas
Copy one into the prompt box above and adapt it to your shot.
“A 5-second clip of one person facing the camera, mouth clearly visible and unobstructed.”
“Replacement speech trimmed to match your video's length within 0.25 seconds, with no background music.”
“A steady, well-lit close-up rather than a wide shot, so the mouth stays large enough to track.”
AI lip sync FAQ
Tested on Cicadas · reviewed 2026-09-29
Real run on 2026-09-27: a 5.04-second 720×960 portrait video was matched to a synthesized voice with Sync Lipsync 2 for 64 credits (12.5 credits per second, rounded up). Mouth shapes followed the speech and closed during the trailing silence. Review lip timing and audio on your own footage before you use it.
Updated Sep 29, 2026 · How we test
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