Identity-lock techniques for multi-shot continuity

Seedance 2.0 Character & Product Consistency Control

Maintaining a consistent character or product appearance across multiple generated shots is one of the hardest challenges in AI video production. This page covers the anchor-and-master method, @image reference strategies, and canonical character sheets that let you lock identity features like face structure, clothing, and color palette so they stay stable from shot to shot.

Günlük güncelleme durumu: Yakında

Son güncelleme: 2026-03-26

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The anchor-and-master method

Start by generating one hero shot that defines the canonical look of your character or product. Use this as the @image reference for every subsequent generation. The anchor image acts as the single source of truth: face geometry, color palette, clothing, and proportions all derive from it. Re-reference the anchor in every prompt to prevent identity drift across shots.

Building a canonical character sheet

A character sheet is a grid image showing your subject from multiple angles: front, three-quarter, profile, and back. Upload this as your primary @image reference. Include a neutral expression and a standard pose so the model has clear baseline features. When your prompt calls for emotion or action changes, the character sheet keeps the underlying identity stable.

Using @image references for product consistency

For product videos, photograph or render your product against a clean background from 2-3 key angles. Attach these as @image references and describe the product in the prompt with specific materials and colors. This prevents the model from hallucinating different textures or proportions in each new shot.

Troubleshooting identity drift

If a character's face or outfit shifts between shots, reduce the number of variables you change per generation. Keep camera angle, lighting, and pose close to your anchor image. Add guardrail keywords like 'same character as reference, consistent clothing, stable face features' to reinforce continuity. Test one change at a time and compare against your anchor.

Input / Output örnekleri

Character lock with anchor reference

Uses an anchor portrait as the @image reference to maintain face identity while changing emotion and camera angle.

@image[anchor-portrait.png] Same woman as reference, warm smile replacing neutral expression, medium shot from three-quarter angle, soft golden-hour lighting, shallow depth of field, consistent clothing and hair, stable face structure, high detail, no flicker.

A medium shot where the character's face structure, clothing, and hair match the anchor portrait exactly, with only the expression and angle changed.

Evidence: consistency capability examples

Product identity across scenes

Maintains consistent product appearance across a lifestyle scene and a studio close-up using dual @image references.

@image[product-front.png] @image[product-side.png] Matte black wireless earbuds on a marble countertop, morning sunlight streaming from left, realistic reflections on earbud surface, exact shape and color as reference images, slow camera push-in, cinematic depth of field, no color shift.

A smooth push-in revealing the earbuds with accurate shape, matte texture, and color matching the reference photos precisely.

Multi-shot character sheet workflow

Demonstrates how a four-angle character sheet keeps identity stable across a walking sequence.

@image[character-sheet-grid.png] Same character as sheet reference, walking through a rainy Tokyo alley, back view transitioning to profile, neon reflections on wet pavement, character wears the same navy jacket and white sneakers from reference, steady tracking shot, cinematic rain atmosphere, stable anatomy.

A tracking shot where the character's build, jacket, and sneakers remain identical to the character sheet across the entire walking sequence.

Sık sorulan sorular

How many @image references should I use for consistency?

One to three is optimal. A single high-quality anchor image works for simple cases. For complex characters, use a character sheet grid that covers front, side, and three-quarter angles. More than three references can confuse the model if they show conflicting details.

What is the difference between the anchor method and a character sheet?

The anchor method uses one hero shot as the identity source. A character sheet combines multiple angles into a single grid image. The character sheet gives the model more spatial information, which helps when your shots require varied camera angles, but takes more effort to prepare.

Can I maintain consistency for non-human subjects like robots or mascots?

Yes. The same principles apply: provide clear reference images with distinctive features, use specific color codes and material descriptions in your prompt, and add guardrail phrases like 'exact proportions as reference' to prevent drift.

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