Video GenerationSeedance 2.5
How to Replace a Video Character Completely with Seedance 2.5
A Seedance 2.5 prompt from the TECH4SSD tutorial "How to Replace a Video Character Completely with Seedance 2.5".
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A Seedance 2.5 prompt from the TECH4SSD tutorial "How to Replace a Video Character Completely with Seedance 2.5".
UNIVERSAL FULL CHARACTER REPLACEMENT, IDENTITY + OUTFIT TRANSFER INPUTS: Source Video = @video1 Replacement Character Reference = @image1 GOAL: Replace ONE specific main performer in @video1 with the complete character shown in @image1. This is a FULL CHARACTER REPLACEMENT. Do NOT perform a face swap only. Do NOT preserve the original actor's clothing. Do NOT blend the source actor with the replacement character. REFERENCE RESPONSIBILITIES: @video1 provides ONLY: - movement - choreography - body poses - timing - walking path - gestures - interactions - camera movement - framing - perspective - scene geometry - environment - lighting reference @image1 provides: - facial identity - hairstyle - hair color - skin tone - body appearance - body proportions - clothing - footwear - accessories - styling - overall character design If @image1 is a character sheet, use ALL available views to reconstruct the exact same character consistently from every camera angle. If @image1 is a single image, infer the unseen side, back and full-body appearance consistently from that image without borrowing identity or wardrobe from the original performer. STEP 1, IDENTIFY THE TARGET ACTOR: Analyze @video1 from beginning to end before generating. Identify the ONE main performer who carries the primary action. Track this same person temporally using: - starting position - movement path - body position - interaction with surrounding people - role in the choreography - turns - gestures - final position - distinctive actions Lock this performer as TARGET_ACTOR. TARGET_ACTOR must remain the same role across: - wide shots - close-ups - side views - rear views - camera changes - occlusions - crowd crossings - turns - different framing Do not accidentally switch to another person after a cut or perspective change. STEP 2, REMOVE THE ORIGINAL CHARACTER APPEARANCE: Use the original TARGET_ACTOR only as a motion skeleton and spatial guide. Do NOT preserve: - original face - original hairstyle - original skin - original body appearance - original clothing - original shoes - original accessories - original character styling The source actor's visual identity must disappear entirely. Only their motion, pose, timing, position and performance remain. STEP 3, REBUILD TARGET_ACTOR FROM @image1: Replace TARGET_ACTOR with the COMPLETE character shown in @image1. Preserve from @image1: - exact facial structure - eyes - eyebrows - nose - lips - jawline - ears - skin tone - hairstyle - hairline - body build - visible proportions - clothing design - clothing colors - footwear - jewelry - accessories - hats - glasses - masks - jackets - shirts - trousers - dresses - uniforms - distinctive character details Treat @image1 as the absolute visual authority for the replacement character. If the character sheet contains multiple angles, use them together as ONE identity. Do not mix clothing or facial features from @video1 into the replacement character. STEP 4, MOTION RETARGETING: Transfer TARGET_ACTOR's exact performance from @video1 onto the replacement character. Preserve: - walking direction - speed - stride length - posture - turns - head movement - shoulder movement - arm movement - hand placement - gestures - leg movement - body orientation - sitting - standing - running - dancing - bending - reacting - interactions - pauses - choreography - action timing The replacement character must perform the same movement at the same moment. Do NOT change the choreography to match the reference image pose. Instead, animate the @image1 character naturally through the poses required by @video1. FRONT / SIDE / BACK CONSISTENCY: When TARGET_ACTOR faces away from camera: generate the correct rear view of the @image1 character and outfit. When TARGET_ACTOR is in profile: generate the correct side view of @image1. When TARGET_ACTOR turns toward camera: reveal the same @image1 identity. The same clothing, body, hair and accessories must remain consistent throughout the turn. There must be no moment where the original actor appears before or after the turn. CLOTHING, IMPORTANT: The clothing from @image1 MUST replace the source actor's clothing. Do NOT retain the source costume. If @image1 contains: - a jacket, preserve that jacket - a hoodie, preserve that hoodie - a suit, preserve that suit - a school uniform, preserve that uniform - jewelry, preserve that jewelry - glasses, preserve those glasses - hat, preserve the hat - shoes, preserve the shoes Adapt the @image1 outfit naturally to: - walking - running - turning - sitting - dancing - bending - wind - gravity - camera perspective The wardrobe must remain visually identical throughout all shots. No wardrobe drift. No colors changing. No source-video clothes returning. BODY ADAPTATION: The body from @image1 should replace the source actor's visual body appearance. Retarget the choreography onto the replacement body's proportions while preserving the original motion path. If the replacement character is: - taller - shorter - slimmer - broader - more muscular - wearing different clothing adapt the movement naturally while keeping the same spatial action and timing. Do not force the source actor's exact body shape onto @image1. OTHER PEOPLE: Do NOT replace anyone except TARGET_ACTOR unless explicitly instructed. All other people in @video1 should keep: - their original identity - original clothing - original position - original choreography - original timing Never clone @image1 into the crowd. Never apply @image1's face or clothes to surrounding people. TARGET_ACTOR = @image1 EVERYONE ELSE = source-video characters CAMERA: Use @video1 as a strict camera reference. Preserve: - exact shot sequence - shot duration - camera position - camera height - camera angle - camera path - tracking - pull-back - push-in - zoom behavior - perspective - focal feel - framing - composition - subject scale - depth relationships Do not invent new camera moves. Do not reframe the replacement character differently from the source performance. The new character must occupy the same spatial role in the frame. ENVIRONMENT: Preserve @video1's environment. Maintain: - location - architecture - furniture - vehicles - walls - ground - signs - props - crowd placement - foreground - background - spatial layout Do not redesign the environment unless explicitly requested. Only regenerate pixels necessary to integrate the replacement character naturally. LIGHTING: Relight the @image1 character to match @video1. Preserve the replacement character's identity and outfit while adapting them to: - source light direction - exposure - shadow direction - color temperature - highlights - reflections - ambient light - depth of field - motion blur - atmosphere The person must look physically present in the original environment. Do not make the character look pasted on top. IDENTITY LOCK: Once @image1 replaces TARGET_ACTOR, lock this identity for the full timeline. Maintain the exact same: - face - skin - hair - body appearance - clothing - shoes - accessories - age - styling through every frame. Never interpolate between the source actor and @image1. Never temporarily restore the source actor. Never use the source actor's appearance to fill missing angles. ANATOMY: Maintain realistic human anatomy. Correct: - face - neck - shoulders - arms - elbows - wrists - hands - five fingers - torso - hips - knees - ankles - feet No: - extra limbs - missing limbs - warped hands - duplicated fingers - stretched torso - broken neck - facial melting - body morphing TEMPORAL CONSISTENCY: The replacement must remain stable across the entire video. No frame-to-frame identity drift. No: - changing face - changing hairstyle - changing clothing - changing skin tone - changing body type - disappearing accessories - changing shoes - source actor returning Treat the full video as one continuous performance by the @image1 character. STRICT NE
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