Character descriptions are how you keep the same person in your videos across a campaign. Without one, every generation produces a different face, even with the same prompt. With one, you get a consistent character you can build a campaign around.
What a character description is
A character description is a short paragraph that names the physical features of a person you want the model to render. Hair, age range, build, skin tone, common wardrobe, distinctive features. You save it once in Settings under Characters, give it a name, and then reference it from any prompt. You can save up to ten characters per shop.
How to write one
Write four to six sentences. Be specific about features that should stay the same across videos. Hair color and length, eye color, age range, skin tone, height and build, signature wardrobe pieces. Be vague about features that should vary. Avoid naming a single outfit unless the outfit is the brand. Example: Maya is a woman in her late twenties with shoulder length dark brown hair and warm brown skin. She has an athletic build, stands about five feet six, and usually wears soft neutral tones. Her smile is open and easy.
Using a character in a prompt
Open Create and click the Character dropdown above the prompt box. Pick the character you saved. Videna injects the description at the start of your prompt automatically, so you only need to write the scene. You can preview the full prompt before generating to check what the model will receive.
Consistency limits
Even with a character description, faces will not be pixel identical across clips. They will be very similar, recognizably the same person to a viewer scrolling a feed, but a side by side comparison will show small differences in features and expression. This is a limit of the model, not a setting you can adjust. For a campaign of three or four clips it is plenty. For a long form video where the same face must hold for sixty seconds, expect more variation.
Editing a character
Open Settings, find the character under Characters, and edit the description. The change applies to every future generation. Past videos in your library are not affected because they were rendered with the previous description.
The right move for most stores is to save two characters, one that matches your existing brand model and one that is different, so you can A B test which face your audience responds to.