AI lip sync: give a silent clip a voice with Kling or VEED

Lip sync takes a clip you already like and a voice, and makes the mouth say the words. Everything else in the clip stays as it was. Two tools, with real before and after clips.

VEED Lip Sync10 credits for 5 sec Kling Lip Sync18 credits for 5 sec

Real results

Made in solorender with these models. Nothing retouched.

Before. The silent clip, made with Grok Video 1.5 Lite. Rex sits still while the makeup artist works.

Kling Lip Sync. After: says "They wanted me to do my own stunts!" His jaw moves with the words. The makeup artist and the trailer are unchanged.

Before: A frame from the silent clip, made with Kling 2.5 Turbo Pro. — **Before.** A frame from the silent clip, made with Kling 2.5 Turbo Pro.

VEED Lip Sync. After: says "Hey everyone, welcome back. Let's get into today's episode." Her head moves just as before. Only the mouth changed.

Best for

✓Giving a voice to a clip you already like, without making it again
✓Swapping the words in a clip: a new line, a new language, a new voice
✓Characters that aren't people. Our T-rex works on Kling Lip Sync
✓VEED Lip Sync for cheap, quick runs. It bills by the second and takes about a minute
✓Kling Lip Sync for short clips of 2 to 10 seconds

Where it struggles

—Kling Lip Sync only takes clips of 2 to 10 seconds, and bills per started 5 seconds of the clip
—Lip sync changes the mouth only. To make a still photo talk, use OmniHuman or VEED Fabric
—Start from a clip where the face is clear and the mouth isn't hidden. A turned-away head gives the tool nothing to sync
—Make the voice first in the Audio lane, about as long as the clip, so the words fit

What you give it

A clip and a voice. Make the voiceover first in the Audio lane. Then open the Talk lane, pick a lip sync tool, add the clip and choose that voiceover. There is no prompt.

The best source clip is a silent one where the person or character is already facing the camera with a closed or relaxed mouth. The tool keeps every other movement in the clip.

Kling Lip Sync or VEED Lip Sync?

VEED Lip Sync is the budget pick: it bills by the second of the clip and comes back in about a minute. Kling Lip Sync takes a little longer and bills per started 5 seconds, for clips of 2 to 10 seconds. Both prices are at the top of this page.

Both kept the rest of the clip unchanged in our runs above. Try a short clip on each and keep the one you like.

Questions

What is AI lip sync?

A tool that changes only the mouth in a video so it says the words in a voice track you give it. The rest of the clip stays the same.

How long can the clip be?

Kling Lip Sync takes clips of 2 to 10 seconds. VEED Lip Sync bills by the second of the clip.

Can I make a photo talk instead?

Yes, with a talking photo tool: OmniHuman or VEED Fabric. They start from a still picture rather than a clip.

Run these for real

Every model in this guide is live in solorender. Credits never expire.

Open VEED Lip Sync →