AI lip sync

AI lip sync.
Re-sync any video.

Drop in a video and a new audio track — Postcrest's AI lip sync re-aligns the mouth phoneme-by-phoneme so the speaker reads as if they recorded the new audio themselves. Perfect for dubbing, translations and multi-market ad creative.

Lip-sync a video
Phoneme-accurate
30+ languages
Up to 4K
Commercial license
Phoneme
Accurate alignment
30+
Languages
4K
Output resolution
Batch
Multi-language exports
Where AI lip sync wins

Speak any language in any video.

Anywhere you need someone to say something they didn't originally say — translation, ad variants, scripted edits.

Multi-language dubbing
Re-sync your videos in 30+ languages — same speaker, every market.
Ad variant testing
Test ten script variants from the same source video — no re-shooting.
Podcast clips
Re-sync podcast clips to clean audio takes for vertical Reel and Short edits.
CEO + spokesperson
Localise spokesperson videos without flying them in for re-shoots.
Course localisation
Translate online courses into 30+ languages with synced lip movement.
AI character dubs
Re-voice AI characters in different accents and languages — same face, every market.
Real AI lip-sync re-renders

Drop in new audio. Mouth re-syncs..

Each clip below was re-synced to a different audio track on Postcrest. The face stays, the lip-sync re-renders.

Multi-language
English to Spanish dub
Spokesperson
Re-scripted CEO clip
Character
Animated re-voice
Educational
Re-narrated explainer
Course
Localised lecture
UGC
Re-scripted clip
Multi-language dubbing

Dub every video in every market.

Postcrest's pipeline pairs lip-sync with voice cloning and translation. Upload a video, pick the target languages, and Postcrest delivers re-synced dubs for each — your real voice, perfect lip movement, every language.

  • 30+ languages
    From a single source video, get 30+ dubbed versions.
  • Voice cloning
    Your real voice in every language — listeners can't tell the difference.
  • Batch mode
    Drop a video + a list of target languages — get all the dubs in one pass.
Try multi-language dubbing

Speak any language in any video.

Lip-sync + voice cloning + translation — one workflow, one subscription.

Lip-sync a video
Included with Postcrest

Lip sync built for broadcast-quality output.

Free lip-sync apps melt mouths and warp jawlines. Postcrest preserves identity, jaw motion and facial structure.

Phoneme-accurate sync
Mouth shapes match the new audio phoneme by phoneme — across 30+ languages.
Identity preservation
Eye line, jawline and skin texture stay intact — only the mouth re-renders.
Up to 4K output
Re-sync doesn't downgrade resolution — output matches source quality.
Multi-language workflow
Combine with Postcrest's translation + voice cloning — one upload, every market dubbed.
Batch re-sync
Drop a video and 10 audio variants — get 10 lip-synced output videos at once.
Commercial license
Watermark-free, full commercial rights — use lip-synced videos in ads and client work.
How it works

Lip-sync a video in three steps.

01
Upload the video
Any video where a face is visible and speaking — MP4, MOV, WebM.
02
Upload new audio
Or generate it — TTS, voice clone or translated voiceover, all built in.
03
Re-sync
Postcrest re-renders the mouth to match the new audio. Watermark-free, up to 4K.
How Postcrest compares

Why creators move from Wav2Lip and standalone dub apps.

Standalone lip-sync apps do one thing. Postcrest pairs lip-sync with voice cloning and translation so the whole dub workflow is automatic.

Wav2Lip / Sync.so
Lip-sync only
Re-syncs the mouth, but you still need to translate the script and generate new audio elsewhere. Plus credit-pricing.
With Postcrest
Translation + cloned voice + lip-sync in one workflow — flat subscription, no credits.
HeyGen translate
Stock voices only
Translates and dubs but uses HeyGen's voices, not yours. Per-minute pricing.
With Postcrest
Use your cloned voice in every dub — your real voice, every language.
Manual dubbing
Studio + voice actor
Professional dubbing is $200-500 per minute of finished video, with weeks of turnaround.
With Postcrest
Same broadcast quality in 5 minutes — your voice, automatic lip-sync.
Loved by creators

What creators say about Postcrest.

"Our YouTube channel is now live in 8 languages. Same instructor, same voice, perfect lip-sync. Postcrest does what HeyGen Enterprise charges 10× for."

L
Lina
Course ops

"We re-cut spokesperson videos for different markets without re-flying the spokesperson anywhere. Lip-sync delivered."

M
Mateo
Brand ops

"Wav2Lip required Python and a GPU. Postcrest is one click and the same quality."

S
Stefan
Solo dev
FAQ

Frequently asked questions

More AI tools in Postcrest

Pair it with the rest of the studio.

Talking Head Generator
Start with a still photo instead of a video.
Explore
Voice Cloning
Generate the new audio in your real voice.
Explore
AI Text to Speech
Generate the new audio from a script.
Explore
One subscription

Every AI tool. From $15.0/mo.

Image generator, image editor, upscaler, image-to-image, video generator, talking-head, lip-sync, captions, TTS, voice cloning and AI music — all in one workspace, no per-credit add-ons.

Get startedSee all plans
50% off your first 2 months — auto-applied at signup
Watermark-free, 4K output
Full commercial license
Every leading model included
Cancel anytime
50% off your first 2 months · auto-applied at signup

Every language. Every audio. Perfect lip sync.

AI dubbing and translation without re-shooting — one subscription.

Lip-sync a video
See plans