Cross-session identity lock
Cross-session character lock in AI video: keep the same face and voice across a series with references, style-locked TTS, and lipsync.
Cross-session identity lock means the spokesperson on Monday is still the spokesperson on Thursday. Same face, same wardrobe rules, same voice performance. One pretty clip is easy. A series is the product.
Three locks, not one toggle
- Visual identity — reference stills / I2V / Seedance-class reference stacks. Wan’s cross-session identity marketing matters only if you actually reuse the same asset kit.
- Voice identity — a clone or a designed voice you do not reshuffle weekly.
- Voice style — style locking in AI TTS so pace and emotion do not drift.
Miss any one and the series feels recast.
A practical kit
- 3–8 stills: front, three-quarter, wardrobe variants you allow
- One voice preset with style lock notes (energy, pace, ban list)
- A lighting recipe in one sentence
- A continuity do-not-change list (hair length, logo side, glasses)
Store them outside the chat so every episode starts from the kit, not from memory.
Episode workflow
- Generate or select the body with the visual kit (text to video with continuity).
- Write the VO; synthesize with the locked voice.
- Lipsync only if the mouth is visible.
- Burn captions; export; label AI where required.
For UGC ads with gesture variety, keep the still and change the driver — motion control for UGC ads.
FAQ
Is Seedance enough without voice lock? For silent product loops, yes. For a talking series, no.
Can I change wardrobe weekly? Yes if the kit includes those variants. Surprise wardrobe is how lock fails.
Does identity lock bypass YouTube inauthentic rules? No. A consistent face can still be a template farm. Editorial insight still required.
Build the kit once. Sign up and reuse it every episode.