Video Head Swap

Video Head Swap

Playground

Instant online AI head & face swap for videos with no watermark, delivering realistic, shareable results in seconds. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

WaveSpeedAI Video Head Swap

WaveSpeedAI Video Head Swap is an advanced AI model for replacing the entire head (face + hair + outline) of a person in video using a reference portrait. It keeps body, pose, and background intact while rebuilding a new, realistic head that matches the scene’s lighting and perspective.

🎬 What this model does

• Replaces the full head region of the subject (face, hair, silhouette, accessories)
• Preserves body pose, clothing, background, and overall composition
• Adapts the new head to scene lighting, color tone, and camera angle
• Produces clean, watermark-free outputs ready for editing or publication

⚙️ Why it looks realistic

• Full-head geometry replacement Swaps the entire head contour instead of only facial features, avoiding mismatched hairlines or skull shape.

• Pose and expression preservation Uses the base video to keep head angle, gaze direction, and expression consistent with the original shot.

• Lighting and color matching Automatically adjusts skin tone, shadows, and highlights so the new head sits naturally in the scene.

• High-resolution blending Smooth edges around neck, hair, and accessories, minimizing visible artifacts across frames.

💰 Pricing

• Minimum billed duration: 5 seconds
• Maximum billed duration: 120 seconds (longer clips are capped at 120 s per run)

🔧 Input Parameters

video (required)

The source video whose head you want to replace. This defines body motion, framing, and background.

face_image / head_image (required)

A clear portrait of the target identity. Frontal or three-quarter views with good lighting work best.

resolution

Output resolution for the processed video, for example:

• 480p – more affordable drafts or quick previews
• 720p – higher-quality output suitable for most publishing workflows

seed (optional)

Controls stochastic variation in the generation:

• -1 or empty → random seed each run
• Any positive integer → reproducible results for the same inputs

(Exact field name may differ slightly between Playground and API, but the behavior is the same.)

🎯 Designed For

• Creators & influencers – Turn one performance into many “identities” without reshooting the whole video.
• Marketing & brands – Rapidly localize or personalize talking-head content while keeping the same body and scene.
• Film, TV & post-production – Quick mockups and concept tests for head replacement shots.
• Privacy & compliance – Replace real heads with synthetic or authorized identities while preserving context.

▶️ How to Use

1. Upload or paste the URL of the video to edit.
2. Upload a face/head reference image for the identity you want to swap in.
3. Choose the desired resolution (480p or 720p).
4. (Optional) Set a seed if you need reproducible results.
5. Click Run to generate the swapped video.
6. Review the result; if needed, adjust the reference portrait or seed and re-run.

📌 Tips & Notes

• Use sharp, well-lit videos where the face is not heavily occluded or motion-blurred.
• For the reference portrait, keep expression and angle reasonably close to the shot you’re editing for the cleanest match.
• Avoid mixing very different lighting conditions (e.g., dark blue stage lighting in video vs. warm daylight in the portrait) unless you want stylized results.
• Always ensure you have the legal right and consent to use all input videos and portraits.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/video-head-swap" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "resolution": "480p",
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"