How do I keep the same character across AI video shots?
The short answer
Start with one approved identity reference, then test costume, angle and movement separately. A repeated text prompt alone is not a continuity check.
A practical workflow
Create a character sheet with a front view, profile and one approved close-up. Keep the original reference separate from costume experiments.
Approve still frames before animation; compare the face, hairline, costume and proportions against the same sheet.
Log model, reference, prompt and take number. Build a contact sheet of adjacent shots before assembling an episode.
Before you publish
Runway documents an image-reference workflow. This is a production approach to test, not a guaranteed fix for the Seedance setup described by the original question.
These guides respond to linked public questions. Editions in other languages translate the same evidence; they do not imply separate local demand or legal advice.
