Lip Sync Video
Lip Sync Video is a video workflow for AI video creation inside Epochal.
What is Lip Sync Video?
Lip Sync Video starts from an existing talking-head or dialogue clip plus one separate speech track. Instead of generating a new scene, the job is to align mouth movement to the uploaded audio inside the shot you already have. On Epochal, this workflow is built around one source video, one source audio track, and explicit sync-mode control when their durations do not line up cleanly.
Why use Lip Sync Video here
Built for one video and one speech track
Upload the clip you want to keep, add one audio track, and generate a synced result without writing a prompt or rebuilding the scene.
Choose how timing mismatches are handled
If the audio runs shorter or longer than the source clip, you can decide whether the result should cut off, loop, bounce, fill with silence, or remap timing.
Review sync faster on the same page
Source inputs, sync settings, and output preview stay together, which makes it easier to check mouth timing, pauses, and obvious drift before another pass.
How to Use Lip Sync Video
Start from the clip that already has the framing, speaker, and performance you want. This workflow expects one MP4 or MOV source video, so use the version you would otherwise have to re-edit or re-shoot.
Upload the audio line, dub, or narration you want the mouth movement to follow. Cleaner dialogue and fewer overlapping sounds make it easier to judge whether the sync landed.
Use Cut Off when extra duration should be trimmed, Loop or Bounce when a repeated segment is acceptable, Silence when gaps should stay quiet, and Remap when you want the timing redistributed across the clip.
Check plosives, pauses, fast syllables, and head turns first. If the drift only shows up near the end, change the sync mode before you replace the source assets.
What You Can Do with Lip Sync Video
Best used when the shot already exists and the real task is to replace, localize, or repair spoken performance without rebuilding the whole video.
Lip Sync Video for dubbing and localization review
Match a translated line or replacement voice track back onto an existing shot so you can review whether the new dialogue lands before a wider edit pass.
Lip Sync Video for creator intros and talking-head revisions
Update one spoken line, hook, or explainer segment without throwing away the framing and performance that were already working.
Lip Sync Video for fixing short-form sync drift
Use it when the edit is basically right but the mouth timing and the speech track no longer line up cleanly after a revision.
FAQ
What do I need before using Lip Sync Video?
You need one source video and one source audio track. This workflow is built around matching speech to an existing clip, so you do not start from a blank scene.
Does Lip Sync Video need a text prompt?
No. The current tool is centered on uploaded media rather than prompt writing. You provide the video, provide the audio, choose a sync mode, and review the result.
What happens if the audio and video lengths do not match?
That is what sync mode is for. You can trim overflow, loop or bounce a segment, fill gaps with silence, or remap timing across the clip depending on how you want the mismatch handled.
What kinds of clips work best with Lip Sync Video?
Lip Sync Video is easiest to review on dialogue shots, creator intros, explainers, dubbed scenes, and other clips where the speaker stays visible and mouth timing is readable. It is less practical when the face is distant, heavily occluded, or cut away too often to judge sync clearly.
Which model is available for Lip Sync Video?
This tool currently runs sync-3 Lipsync, a dedicated lip sync workflow rather than a general video restyling model.
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