Refresh a creator clip
Pair a talking-head recording with an updated voice track.
AI Video Lip Sync
Match a speaker’s mouth movements to a separate voice recording.
Choose MP4 video
Per file: up to 30 minutes · 2 GB
MP4
Choose voice audio
Per file: up to 30 minutes · 2 GB
MP3 / AAC / WAV / M4A / FLAC
Loop video
Use the shorter video or audio duration.
One clear voice and one unobstructed, front-facing person. No HDR.
Account-protected files, processed in the cloud. Originals: 24 hours · Results: 7 days
Update the voice in an existing video
Match a speaker’s mouth movements to a separate voice recording.
Loop video to fit audio
Use the full audio. Longer audio repeats the video forwards and backwards.
Runs in the cloud
After upload and submission, the task continues while you work elsewhere.
Choose video and audio
Platform limits: 30 minutes and 2 GB per input.
Pay by output duration
40 credits per output minute, rounded up; minimum 3 credits. A 90-second output costs 60 credits.
Private account storage
Your video, audio and result are protected by account permissions.
How video lip sync works
Match a speaker’s mouth movements to a separate voice recording.
Choose video and audio
Choose an MP4 with one person facing the camera and a clear voice recording. Check the length of both files.
Set the output duration
Keep the shorter duration, or enable looping to use the full audio. Longer audio repeats the video forwards and backwards.
Review and download
Check mouth movements, facial details, sound and the loop boundary before sharing.
Ways to use video lip sync
AI-generated illustrations of use cases; not processing results.
Refresh a creator clip
Refresh a creator clip
Pair a talking-head recording with an updated voice track.
Update a lesson
Update a lesson
Use a clear narration with a teacher’s existing video.
Revise a product introduction
Revise a product introduction
Match a presenter’s video to your revised spoken introduction.
See lip sync before and after
Both sides use the same voice track: original mouth movements on the left, synced results on the right.
See lip sync before and after
Both sides use the same voice track: original mouth movements on the left, synced results on the right.
0:00 / 0:05
Match your video to a new voice track
40 credits per output minute, rounded up; minimum 3 credits. A 90-second output costs 60 credits.
Sync lipsSupported files and output
Files are checked after upload. Keep your original.
- Input formats
- MP4
- Maximum file size
- 2 GB
- Maximum duration
- 30 minutes
- Input requirements
Use an MP4 video with MP3, AAC, WAV, M4A or FLAC audio. Platform limits: 30 minutes and 2 GB per input.
- Output
Download the processed video with the supplied voice track. Output is limited to 2 GB; resolution enhancement is not included.
With looping off, the shorter file determines the output length. With looping on, the full audio is used; longer audio repeats the video forwards and backwards.
- What to check
Use one real person facing the camera, with an unobstructed face, and one clear voice. No HDR. Review the full result.
Prepare and upload your finished voice recording. The tool matches mouth movements to that audio; it does not generate speech or translate it.
Video lip sync FAQ
File requirements, output duration and downloads explained.