Check the face before sharing
Watch the whole clip, then pause near the beginning, middle and end. Compare those frames with the original. A convincing opening frame does not establish that the face stays consistent throughout.
When you animate portraits for a character introduction or a small moving illustration, judge the expression as well as the movement. If a blink changes the eye shape, remove any head turn and simplify the request. If a consistent face is essential and the result still drifts, use a method that gives you direct control over the original layers.
- The face or expression changes
- Remove head turns, speech and smiles from the next prompt. Try one blink or move only the hair. If likeness must remain exact, generative animation may not suit the task.
- Hands or clothing warp
- Keep those areas explicitly still and remove body gestures. Inspect the result again; a preservation instruction is a request, not a lock on pixels.
- The whole image drifts
- Remove camera movement and zoom instructions. Ask for a fixed background and one local action, then check whether the subject actually moves independently.