Video Head Swap API

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 a video using a reference portrait. The model keeps the body, pose, and background intact while reconstructing a new, realistic head that matches the original 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 distorted skull shapes.

• Pose and expression preservation Follows the motion in the source video so head angle, gaze direction, and expression remain consistent with the original performance.

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

• High-resolution blending Smooth transitions around hair, neck, and accessories, minimizing visible seams or flicker across frames.

💰 Pricing

Pricing is based on video duration and output resolution, with a 5-second minimum and 120-second cap.

Resolution	Price per second	Min charge (5 s)	Max charge (120 s)
480p	$0.040	$0.200	$4.800
720p	$0.080	$0.400	$9.600

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

🔧 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 generation:

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

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

🎯 Designed For

• Creators & influencers – Turn one performance into many identities without reshooting.
• Marketing & brands – Localize or personalize talking-head content while keeping the same body and scene.
• Film, TV & post-production – Rapid previs, mockups, and concept tests for head-replacement shots.
• Privacy & compliance – Replace real heads with synthetic or authorized identities while preserving situational 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. Select the output 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 run again.

📌 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 target shot for the cleanest match.
• Avoid extreme mismatches in lighting (e.g., dark blue stage light in video vs. warm daylight portrait) unless you want a stylized look.
• Ensure you have the legal right and consent to use all uploaded videos and portraits.