AI Character Consistency: Keep One Face Across Every Shot

TL;DR — how AI character consistency actually works

AI character consistency is solved by building a multi-angle character sheet first (front, side, back), generating one locked anchor keyframe at the target location, referencing exact version numbers in your lock command, and feeding both the sheet and the anchor frame into Seedance 2.0 reference-to-video so every clip inherits the same face, skin tone, and wardrobe. This is the core workflow inside invideo's character consistency tools — the same pipeline used to keep characters consistent across shots inside any AI video ad workflow.

Build a multi-angle character sheet first

Start by generating cast headshots without wardrobe, lock the faces you want, then build a multi-angle character sheet — front, side, back — with the catalogue products assigned per character. The invideo agent will auto-combine each locked face with the right wardrobe across scenes, so you stop re-prompting costume on every shot. For multi-character ads, casting faces first and letting the agent match wardrobe from a lookbook is faster than generating fully-styled characters from scratch.

If the agent's auto-pulled wardrobe doesn't match what you want, drop the exact product images into the chat as an override and assign each item to a named character with one styling line. For UGC-heavy work like a UGC ad character casting flow, this same sheet becomes the persistent identity reference that every later step routes through — and you should build reference sheets first before touching the storyboard.

Generate one anchor frame at the target location

Before any clip is generated, produce one clean, locked keyframe of your character at the target location — final framing, final lighting, final wardrobe. This single image is the anchor frame method: every subsequent video generation references it, so character and setting hold together across the cut.

Keep the anchor frame discipline strict — iterate on the still until it's right, then stop. Spending image credits to lock framing is far cheaper than burning video credits on an undecided shot. When your character must interact with products of very different scales in the same ad, build a separate anchor frame per scale rather than one unified frame, so the model doesn't confuse the size relationships during generation.

Lock specific version numbers

Once a character iteration is approved, reference its exact version number in a lock command — "lock character v3, location v2, wardrobe v1" — so the agent uses those precise outputs for every downstream generation. This is the single instruction that prevents the agent from silently swapping in a newer, slightly-off version mid-production. The full syntax for how to lock a character version lives in the dedicated walkthrough.

Lock sequentially: character → location → wardrobe → voice. Each tier should be approved before the next is generated. If a later tier exposes a flaw in an earlier one, unlock that tier, regenerate, and re-lock — never let an unresolved decision propagate into video credits.

Route to Seedance 2.0 reference-to-video

Feed the locked storyboard frame as the keyframe and the multi-angle character sheet as the reference into Seedance 2.0 reference-to-video. In a documented localization run, using the storyboard panel as the keyframe reference into Seedance 2.0 R2V preserved character identity — including skin tone on hands and feet — across every shot in the ad. That's the configuration that actually carries identity from a still into motion.

The invideo agent is the routing layer that holds all of this together: it stores your character sheet, anchor frames, and version locks in project context, then sends each shot to the right model with the right references attached. invideo has every current generation model available inside one agent, so you don't pick a platform per shot — you pick a shot, the agent picks the model.

Storyboard before video to prevent drift

For any change bigger than a small tweak — new character, new market, new location — generate the full storyboard as photorealistic panels before animating anything. An 8-panel storyboard locks composition, lighting, and identity per shot, then each panel becomes the keyframe input for its clip. Skipping the storyboard and going straight from character + voiceover references into video risks visible skin-tone inconsistency in close-ups and B-roll. This is the same lock that protects localized ad character swaps from drifting off-brand.

One quotable rule for the file: for a change this big, storyboard first. New face, new language, new location means new frames — and the storyboard is what keeps the cut feeling like one ad.

Comparison: which model holds character best

Model choice matters, but inside the invideo agent it's a routing decision, not a platform decision. A short read on the trade-offs the agent makes per shot:

• Seedance 2.0 reference-to-video — strongest at carrying identity (face, skin tone, wardrobe) from a keyframe + character sheet into the clip. Default for shots that must hold a locked character against an anchor frame, and the model that enables single-pass multi-shot generation so audio and visual continuity hold across cuts.
• Kling 3.0 — generates multi-shot sequences natively and handles expressive motion well; useful when the shot needs a stronger performance beat and identity tolerance is moderate.
• Veo — clean cinematic motion and prompt fidelity; the agent reaches for it where camera language matters more than tight character lock.
• Runway — competitive on stylized motion; selected case-by-case rather than as a default for consistency work.

The invideo agent autonomously selects the right model per shot based on the references attached and the shot's intent — but you can override. For a deeper read on the head-to-head, see Kling vs Seedance 2.0 for consistency.

Common drift modes (and the fix)

Three drift modes account for almost every consistency failure. Each has a specific fix:

• Face drift across shots — the cause is usually a missing or stale character sheet. Fix: regenerate the multi-angle sheet, re-lock the version numbers, and re-attach the sheet as a reference on every shot. If the agent's auto-pulled reference is the flawed one, manually upload the approved character image into the chat as an override.
• Skin-tone drift in close-ups and B-roll — caused by going to video without a photorealistic storyboard. Fix: generate the storyboard panels first, then route each panel into Seedance 2.0 reference-to-video as the keyframe. For deeper detail on skin tone consistency, the dedicated guide walks the full sequence.
• Wardrobe drift between scenes — caused by letting the agent re-pick wardrobe per shot. Fix: lock wardrobe to the character sheet, and if the auto-pull is wrong, drop the exact product images into the chat and assign them to the named character with one styling line. Remove any flawed storyboard reference before regenerating — leaving it attached re-introduces the same error.

FAQ

How do you keep AI characters consistent across shots?

Build a multi-angle character sheet (front, side, back), generate one locked anchor keyframe of the character at the target location, lock specific version numbers in your instruction to the invideo agent, then feed the sheet plus the anchor frame into Seedance 2.0 reference-to-video so every clip inherits the same identity. For ads with major changes, generate a photorealistic storyboard before animating.

What is the anchor frame method?

The anchor frame method is the practice of generating one clean, locked keyframe of your AI character at the target location — final framing, lighting, wardrobe — before producing any video clips. Every subsequent clip is generated against that anchor, so character and setting hold consistent throughout the ad.

Which model holds character best — Seedance 2.0 or Kling?

Seedance 2.0 reference-to-video holds character identity (face, skin tone, wardrobe) tightest when paired with a locked keyframe and a character sheet, and supports single-pass multi-shot generation that preserves continuity across cuts. Kling 3.0 generates multi-shot sequences natively and is strong on performance motion. The invideo agent routes each shot to whichever model fits — you don't have to choose globally.

Do I need a character reference sheet?

For any multi-shot ad, yes. A multi-angle character sheet — front, side, back, with wardrobe assigned — is the persistent identity reference that every storyboard panel and clip generation routes through. For a single-shot, single-location ad, you can skip the separate sheet and jump straight to keyframe iteration.

How do I lock a specific character version?

Reference the exact version number of the approved iteration in your instruction to the invideo agent — for example, "lock character v3 and use it as the reference for all subsequent shots." The agent will pin that precise output and use it on every downstream generation until you unlock or replace it.

Sources

• Reddit r/aivideo — character consistency techniques discussion — community thread on which reference inputs actually hold identity across AI video clips.
• Reddit r/StableDiffusion — multi-angle reference sheet workflows — creator-reported techniques on building character sheets that survive into video generation.
• Google's information-gain patent overview, IPWatchdog — context on why locked, structured references reduce drift in generative pipelines.
• Reddit r/MediaSynthesis — keyframe-to-video best practices — practitioner notes on keyframe locking before motion generation.