Replace the **man in the original video** with the **uploaded person**.
Use the uploaded image only as the **identity reference**. Preserve the uploaded person’s **facial identity, gender traits, face shape, eyes, eyebrows, nose, lips, skin tone, hairstyle characteristics, and overall recognizable appearance**. Adapt the replacement naturally so the final character clearly looks like the uploaded person while staying realistic in motion.
Keep **everything else in the original video the same**, including:
* body movement and proportions
* running motion, posture, and gestures
* clothing and accessories, unless minimal adjustment is needed for a natural identity match
* facial expression timing
* head movement and eye direction
* camera angle and framing
* camera movement
* background and environment
* lighting, shadows, and color tone
* video speed and duration
* all objects, props, and scene details
* the original action intensity and overall vibe
Track the replacement accurately throughout the full clip, including:
* fast movement
* head turns
* side angles
* motion blur
* partial occlusions
* changing perspective during the run
The replaced person should blend seamlessly into the footage, with realistic skin texture, lighting, perspective, and motion, so it feels like the uploaded person was the one originally filmed in the action scene.
Avoid:
* identity drift
* face flickering
* warped or stretched facial features
* mismatched skin tone
* unnatural face edges
* distortion during fast motion
* changing the original background, pacing, or action