← Back to Selected Work
Case Study 04

Character Consistency: Still to Motion

Extending a reference identity into photorealistic stills and AI-generated motion across different environments and motion intensities.

One reference identity → Two generated scenes → Two motion intensities

Role
Concept, generation, motion direction, visual QA
Discipline
Generative image and video
Focus
Identity preservation under movement
Output
Two stills, two motion sequences
Still to motion

Two scenes, each generated as a still and then extended into movement.

Generated café still of the reference character
Café — still
Café — motion
Generated street still of the reference character
Street — still
Street — motion
Motion demand

One identity, two very different demands.

Reference identity portrait

Café — subtle micro-performance

Small movements carry the most risk. A blink, a breath, a slight shift of weight — at this scale the face stays large in frame, so any drift is immediately visible.

Street — stronger full-body motion

Full-body movement introduces gait, limb articulation and the way clothing responds to walking. The direction was a natural walking pace with a camera that behaves like it is actually there.

Process

  1. Fix the reference identity and carry the same description into both scenes.
  2. Generate the café and street stills to the same identity standard before any motion work.
  3. Choose the motion intensity per scene deliberately, rather than applying one setting to both.
  4. Write motion prompts around behaviour — what the person is doing — instead of camera language alone.
  5. Review each sequence at the frames where the face is largest and where it moves fastest.
  6. Regenerate where identity slipped mid-sequence rather than trimming around the problem.

Checked across every frame, not only the first

  • Identity holding mid-sequence, not just at the source frame
  • Face morphing during turns or fast movement
  • Hand and finger construction while in motion
  • Gait and limb articulation in the street sequence
  • Clothing responding correctly to body movement
  • Background objects and people behaving consistently
  • Camera movement reading as physical, not a pan applied to a photo
  • Light staying attached to its source throughout
Outcome

One identity that survives from a fixed reference through two environments and two very different levels of movement — the point at which generated character work becomes usable for content rather than for a single frame.