Question 1

What is Veo 3.1?

Accepted Answer

Veo 3.1 is an AI video model available on Lip Sync AI. This page uses the Veo 3.1 Quality profile. You can start from text or a single image, choose 4, 6, or 8 seconds, and select 720p, 1080p, or 4K in 16:9 or 9:16.

Question 2

How is this page different from Veo 3.1 Lite or Fast?

Accepted Answer

Lite and Fast are separate model options in the general video generator, with different credit costs. This landing page keeps Veo 3.1 selected so you can generate with the Quality profile without switching models first.

Question 3

How long can my video be?

Accepted Answer

The current Veo 3.1 options on Lip Sync AI are 4, 6, or 8 seconds. A custom length outside those three values is not available on this page.

Question 4

Does Veo 3.1 support 4K here?

Accepted Answer

Yes. The generator includes 720p, 1080p, and 4K. Select 4K from the resolution control and check the displayed credit cost before generating.

Question 5

Can I create a video from a photo?

Accepted Answer

Yes. Switch to image-to-video, upload a single image, and describe the motion. Use an image with a clear subject and enough space for the camera move you want.

Question 6

Can Veo 3.1 generate audio on this page?

Accepted Answer

The current Veo 3.1 configuration on Lip Sync AI does not expose an audio-generation toggle. Describe visual motion in your prompt; dedicated lip-sync or voice tools are separate workflows.

Question 7

Which aspect ratios can I choose?

Accepted Answer

16:9 and 9:16. Square and other ratios are not currently listed for this model.

Question 8

Is Veo 3.1 free to use?

Accepted Answer

Generation uses credits on Lip Sync AI. Duration and resolution affect the displayed cost. Check the generator and the pricing page for current plans and available balance.

Question 9

Can I use the videos commercially?

Accepted Answer

Review Lip Sync AI's Terms of Service and applicable model terms before commercial use. You need appropriate rights to uploaded images, recognizable people, brands, and other protected material.

Question 10

How should I write a Veo 3.1 prompt?

Accepted Answer

Start with one subject and one main action. Add the setting, a single camera move, and the lighting. Choose a duration that gives that action time to happen, then refine the prompt after you review the clip.

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