🛠 Fixes · Faces

AI Video Faces Look Distorted? Ten Fixes for Drifting Faces

📅 Oct 2026·⏱ 4 min read·PulseMotionHub Team

Faces are what we notice first, so a face that melts, drifts or becomes someone else ruins a clip fast. The causes are usually predictable: motion that is too big, a source photo that is too soft, or a face that is too small in the frame. These ten fixes are in rough order of cost and effect.

Key takeaways

Common Symptoms and Likely Causes

SymptomLikely cause
Face slowly becomes a different personLong clip, large motion, small face
Eyes or mouth meltExpressive motion requested
Teeth change shapeOpen mouth or laughing
Face flickersHard lighting or soft source
Face stretches when the camera movesCamera move on a fragile face
Skin looks plasticOver-smooth model output

The Ten Fixes

1
Use a sharper, front-facing photo. Both eyes visible, even light. Fix a soft face with face restoration (1 credit). See face restoration.
2
Crop closer. A larger face in the frame gives the model more to hold on to. A small face in a big scene drifts more.
3
Ask for less. “Blinks and breathes” holds. “Laughs, turns and talks” does not.
4
Use Static Shot. A moving camera plus a moving face doubles the chance of error.
5
Shorten the clip. Five seconds drifts less than ten.
6
Add “her face stays exactly the same” to the prompt.
7
Add a short negative prompt: “different person, distorted face, melting features”. See the negative prompts guide.
8
Try a stronger model. Kling v2.1 (1), Kling 2.5 Turbo Pro (2) and Kling 3.0 Pro (2, Pro and Studio). Compare on the same photo.
9
Use a preset built for faces. Photo Comes Alive and Warm Smile are 1 credit each, and are tuned to keep the face steady. See Photo Comes Alive.
10
Change the photo. Some photos just do not animate well: profiles, sunglasses, heavy shadows, strong motion blur.
Try fixes 1 to 5 together.
A restored, closer-cropped photo with a calm prompt costs about 2 credits.

What Not to Do

Photos That Rarely Work

PhotoWhy
Profile viewHalf the face is invented
Sunglasses or hands over the faceHidden parts are guessed
Tiny faces in a groupToo little detail
Heavy filters or beauty smoothingPlastic skin, little to anchor to
Strong motion blurThe model reads blur as shape

Time to Move On

If a face keeps drifting after two or three well-planned attempts, stop spending credits. Pick a different photo, or use a gentler idea such as a slow push-in with a still face. The cost of one more try is better spent on a better source.

Results vary, and no setting guarantees a perfect clip. If a fix does not work after two or three tries, change the photo or the idea, not just the prompt.

For portraits, see ten portrait tips and the portrait prompt library. For dance videos, our nine fixes cover bodies.

Frequently Asked Questions

Why do faces change in AI video?

The model generates each frame and can wander from the source, especially with large motion, a long clip, a small or soft face, or a moving camera.

How do I stop a face from drifting?

Use a sharp front-facing photo, crop closer, ask for small movements, use a static camera, keep clips to 5 seconds and add “face stays exactly the same” with a short negative prompt.

Which model is best for faces?

Kling 3.0 Pro is our highest-quality Kling model (2 credits, Pro and Studio). Kling 2.5 Turbo Pro and v2.1 are cheaper. Compare them on your photo.

Is there a one-click option that keeps faces steady?

Photo Comes Alive and Warm Smile are 1 credit each on Standard quality and are tuned for portraits.

Will upscaling fix a distorted face?

No. It sharpens and enlarges what is there, including the distortion.

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