AI Video Tutorial & Prompt Guide
How to Replace Full Characters in Any Video Using Higgsfield AI (Genjutsu Motion Transfer)
⚡ Quick Resource Links
Get started right away by accessing the official AI platform and downloading the practice video file:
Have you ever wanted to replace an actor or dancer in a video with your own custom AI character, but simple face-swap tools left the original clothes, hair, and body unchanged?
With Higgsfield AI's Genjutsu (Motion Transfer) model, you can now perform a complete character transformation. It replaces the entire character—face, hairstyle, body build, clothing, and accessories—while preserving 100% of the original choreography, camera motion, lip-sync, and realistic lighting.
Unlike traditional deepfakes that only paste a 2D face, Genjutsu recalculates realistic scene physics, fabric folds, dynamic lighting, and body proportions onto your target character reference.
Face Swap vs. Full Character Replacement
| Feature | Traditional Face Swap | Higgsfield Genjutsu |
|---|---|---|
| Facial Identity | Swapped | ✅ Fully matched with emotion & lip sync |
| Hairstyle & Color | ❌ Retains original actor hair | ✅ Replaced with target character's hair |
| Clothing & Outfit | ❌ Original clothes only | ✅ Complete outfit & texture transfer |
| Physique & Anatomy | ❌ Original actor body | ✅ Transformed to match character ref |
| Lighting & Shadows | Often looks pasted | ✅ Dynamically calculated scene physics |
Step-by-Step: How to Create Your Motion Transfer Video
Access the Genjutsu Model
Go to Higgsfield AI and select the Genjutsu - Motion Transfer tool from the AI generation dashboard.
Upload Your Input Assets
• Source Video: Upload your dance or action video. (You can download the sample practice video here).
• Target Image: Upload your character reference image and tag it as @Image 1.
Configure Resolution & Bitrate
Choose your desired aspect ratio (16:9 for YouTube, 9:16 for Reels/Shorts, or 1:1 for Instagram) and select High Bitrate for optimal clarity and crisp details.
Paste the Master Prompt & Generate
Copy the tested prompt below, paste it into the prompt box, and hit Generate.
📋 The Exact Master Prompt (Copy & Paste)
Copy this ready-to-use prompt and paste it directly into Higgsfield:
Replace the entire main male character in the source video with the exact character shown in @Image 1. @Image 1 is the complete and authoritative reference for the new character’s identity and appearance. Match @Image 1 exactly, including the face, facial proportions, eyes, nose, lips, jawline, skin tone, hairstyle, hair color, body shape, physique, clothing, outfit design, colors, patterns, shoes, accessories, and overall styling. The character’s complete look must remain exactly like @Image 1 throughout the entire video. Do not alter, redesign, simplify, beautify, modernize, recolor, or reinterpret the character’s appearance. Do not use the original character’s face, hairstyle, body, clothes, suit, colors, accessories, or visual styling. If @Image 1 contains multiple views of the same person, use all views to maintain the same consistent character from every angle. Treat all views as references for one single person, not different people. Preserve the exact identity and appearance during front views, side views, three-quarter views, head turns, speech, fast movements, and changing camera angles. Keep the character’s face, hairstyle, outfit, body proportions, and accessories consistent from the beginning to the end of the video. The character must always look like the person shown in @Image 1, with no identity drift or changes in costume, hairstyle, facial structure, or body design. Preserve the original video’s actions, choreography, gestures, poses, body movements, head movements, gaze direction, facial expressions, lip-sync timing, camera movement, framing, editing, background, environment, other people, and audio. Apply the original character’s movements naturally to the new character while keeping the new character’s exact appearance from @Image 1. Match the original scene’s lighting, shadows, reflections, perspective, depth of field, color grading, and motion blur. Make the clothing, hair, face, and body interact naturally with movement and objects. Preserve realistic skin texture, fabric details, clothing folds, natural occlusions, and hands or objects passing in front of the character. The final result must look as if the exact character from @Image 1 was originally filmed in the source video. Do not create a face swap only. Replace the complete character design while keeping the character’s look exactly based on @Image 1. Avoid any face-only replacement, original-character clothing, original-character hairstyle, look changes, identity drift, flickering, facial warping, inconsistent outfit, changing colors, changing accessories, beauty filters, plastic skin, distorted anatomy, extra limbs, visible seams, or cartoon-like rendering.
📥 Want to test with our sample video?
Download the exact sample video used in this tutorial to follow along step-by-step:
Download Sample Video File💡 Pro Tips for Studio-Quality Results
🔄 Multi-View Character Sheets
If your actor turns around, upload a turnaround sheet (Front + 3/4 + Profile view) as @Image 1 to prevent identity distortion.
☀️ Match Base Poses & Lighting
Selecting a reference image with clean, neutral lighting lets the AI accurately cast the source scene's dynamic shadows.
🗣️ Precise Lip Synchronization
If the original actor is speaking or singing, Genjutsu matches mouth articulation down to individual syllables.
❓ Frequently Asked Questions (FAQ)
Q: Can I replace a female character or anime character?
Yes! Simply change "male character" to "female character" or your specific character style in the first line of the prompt.
Q: Why did my video only change the face?
Ensure you include the negative constraints from the prompt forbidding face-only replacement, and check that your image reference shows full clothing and hair clearly.