Consistent characters in AI video, from the first shot to the last.

AI video models invent a new face every time they make a clip. RizzGen decides each face once, on a reference sheet you approve, and generates every shot from it.

  1. Youdescribe the cast, or upload a reference
  2. Rizzidraws a reference sheet for each character
  3. Youapprove or change the sheets
  4. Rizzigenerates every shot from them
Create your cast See the sheets in use

120 free credits. No card required. Planning is always free.

The problem, and the fix

A consistent character looks like the same person in every shot: the same face, hair, build and clothes, in any light and from any angle. Video models make each clip separately, so from a text prompt alone they draw a slightly different person each time. The fix is to decide the face once, before anything is generated.

How RizzGen holds a character

  1. 01

    One sheet per character.

    Full body from four sides and the face from three angles, in the clothes they wear in the film.

  2. 02

    You approve it first.

    Change the age, the hair, the jacket. Reference sheets are free, and no clip is made until you sign off.

  3. 03

    Every shot uses it.

    Each clip a character appears in is generated with their sheet as the reference, whatever the light or lens.

  4. 04

    Fix the one that slips.

    If one shot drifts, re-shoot that shot alone. The rest of the film stays as it was.

One sheet, every shot: the cast of GENESIS

GENESIS is a short film made in RizzGen. Pick a character to see their reference sheet and the shots that were generated from it.

Reference sheet for the hydroponics technician: full body from four sides and her face from three angles
Reference sheet, approved before any clip
  • The technician tending the hydroponic wallHydroponic wall, pink grow light
  • The technician tossing a tomato to the engineerCorridor, with the Engineer
  • The technician tucking the child into bed, closeBedroom, close and warm
  • The technician bending over the sleeping child, wideBedroom, wide by the window
Reference sheet for the child: full body from four sides and his face from three angles
Reference sheet, approved before any clip
  • The child asleep while the technician tucks him inAsleep, close
  • The child asleep in a wide shot of the bedroomAsleep, wide
  • The child reaching toward a holographic city beside the engineerAwake, at the holographic city
Reference sheet for the engineer: full body from four sides and her face from three angles
Reference sheet, approved before any clip
  • The engineer catching a tomato in the corridorCorridor, catching the tomato
  • The engineer beside the child at the holographic cityHolographic city, with the Child

Places and objects get sheets too: the habitat, the lander and the rover in GENESIS were each drawn once and reused. More on how GENESIS was made, and how the same sheets work as a series bible.

Describing a face, or showing one

Words leave room for the model to guess. A picture does not.

Prompt only Describe each time
  • "Woman, dark curly hair, grey jumpsuit" fits thousands of faces.
  • Each clip picks a different one, so the face drifts from shot to shot.
  • You notice in the edit, after the credits are spent.
Reference sheet Decide once
  • The face, build and clothes are drawn once and approved by you.
  • Every shot is generated from that picture, not from a description.
  • The cast is settled before a single clip costs anything.

What makes a reference sheet work

Rizzi draws the sheets for you, but the same rules apply if you bring your own reference.

  • One character per sheet, on a plain background, in even light.
  • The whole body from several sides, plus the face up close, so every angle has an answer.
  • The clothes they wear in the film. A costume change gets its own sheet, so it is a choice, not drift.
  • The same name for the character everywhere in the script, so every shot is matched to the right sheet.

Where it can still slip

  • Very wide shots, where a face is a few pixels tall, hold less detail than close-ups.
  • Video models follow references with different strictness. If one model drifts, try another for that shot.
  • Hands, jewellery and small props are the first details to wander. Check them before you approve a shot.

Settle the cast for free. Pay only for clips.

The concept, the script and the reference sheets for your cast, places and objects are free. Credits are used when clips, voices and music are generated, and you see each cost before you confirm.

  • 120 free credits
  • No card required
  • Credits never expire
Create your cast See pricing

Questions

Decide the character once, as a picture, before anything is generated. In RizzGen, Rizzi draws a reference sheet for each recurring character (the full body from several sides and the face up close, in the clothes they wear in the film), you approve or change it, and every clip that character appears in is generated with the sheet as its reference.

Video models make each clip separately. A text description such as "woman with dark curly hair" fits thousands of faces, so each clip draws a slightly different one. Without a reference image the model has nothing to hold it to the face you had in mind.

Yes. Upload a photo, drawing or render of the character and Rizzi uses it when drawing the reference sheet. Only use a real person's likeness with their permission.

Yes. RizzGen remembers your cast between projects, so episode 2 starts with the same approved sheets as episode 1 instead of a fresh guess.

Yes. Give each outfit its own reference sheet. The change then happens because you chose it, not because the model drifted.

RizzGen sends the reference sheet to the video model for each shot, but models follow references with different strictness. If a shot drifts, re-shoot that shot alone or try another model for it; the rest of the film stays as it was.

Cast your film.

Describe your characters. You approve their sheets before any clip is made.

Planning and reference sheets are free. 120 free credits, no card required.