LiamGvchi/gc-still-image-motion-director

GC Still Image Motion Director

Turn a still image into a motion decision and a copy-ready image-to-video prompt. Derive motion from the image's subject, meaning, composition, and physical relationships; do not apply a stock animation effect.

Core Workflow

1. Inspect the real image before proposing motion.
   • For a folder, inventory readable image files, dimensions, names, and visual patterns. Create a contact sheet when it materially improves comparison.
   • If an image cannot be accessed, ask the user to attach or provide it again instead of inventing its contents.
2. Separate observation from recommendation.
   • State what is visibly present.
   • Label inferred meaning or motion intent as a recommendation, not a fact.
3. Identify:
   • primary subject;
   • subject type and implied behavior;
   • composition axis, focal point, whitespace, frames, and hierarchy;
   • text, numbers, paper texture, annotations, borders, and other fragile layout elements;
   • physical relationships such as gravity, tension, wind, water, contact, rotation, or resistance.
4. Decide whether the image should use:
   • motion: one clear restrained action;
   • micro-motion: an almost still action or environmental trace;
   • static: no subject motion; explain why stillness serves the image better.
5. Select at most:
   • one primary motion;
   • one physically related secondary motion;
   • one optional observation effect, only when justified.
6. Define the lock list before writing the prompt.
7. Write a platform-ready prompt with a concrete subject, path, range, timing, locks, and failure prohibitions.
8. Check that the proposal preserves the original design rather than regenerating it frame by frame.

Read references/motion-decision-framework.md when the image's correct motion is ambiguous, when comparing several images, or when deciding that a subject should remain still.

Read references/prompt-construction.md when writing the final prompt, adapting it to a named platform, or diagnosing why a previous prompt caused drift or deformation.

Motion Rule

Let motion come from the image itself.

Prefer, in order:

1. an intrinsic action of the subject;
2. a physical response caused by that action;
3. an environmental or observation effect when the first two are unsuitable.

Do not default to scanning light, floating, breathing paper, parallax, particles, camera push-in, or generic cinematic motion. Do not force a specimen, stone, archive, paused mechanism, or quiet object to behave like a living subject. A valid result may recommend no subject movement.

Keep motion restrained unless the user explicitly asks for stronger animation. Use the smallest movement that makes the intended relationship legible.

Stability Rules

• Lock typography, numbers, labels, handwritten notes, paper texture, borders, frames, grids, and collage geometry.
• Keep subjects inside their original visual region unless the composition clearly provides a path.
• Preserve subject count, identity, silhouette, clothing, proportions, and object connectivity.
• Keep ropes, handles, joints, stems, limbs, and mechanical links continuous.
• Avoid camera movement by default for poster, collage, archive, and editorial layouts.
• Do not describe unrelated styling that is already supplied by the source image; redundant style language can encourage redraw.
• For a motionless recommendation, propose a static export or a minimal environmental trace instead of inventing action.

Output

For one image, return:

图片：
[name]

画面观察：
[visible subject, composition, and fragile elements]

动态判断：
[motion / micro-motion / static] — [short reason]

建议运动：
- 主动作：
- 伴随动作：
- 范围与路径：
- 节奏与时长：

必须固定：
- [...]

不建议：
- [...]

可直接复制到[目标平台]：
[complete prompt]

主要风险：
- [...]

Omit empty fields. If the user asks for only a prompt, return only the copy-ready prompt.

For a folder or image set:

1. summarize the shared visual system;
2. state which constraints can be shared;
3. classify each image as motion, micro-motion, or static;
4. write a separate prompt for each requested image;
5. do not claim that one universal prompt is sufficient when subject behavior differs.

Default to Chinese when the user writes Chinese. Default to a restrained 4-second image-to-video clip when the target model and duration are not specified, and state that assumption briefly.

Quality Check

Before delivering, verify:

• Is the motion caused by something visible in the image?
• Is there only one dominant action?
• Does the secondary motion obey the same physical cause?
• Are all fragile design elements explicitly locked?
• Does the prompt specify range, direction, and rhythm rather than saying only "move naturally"?
• Could the result still work if the camera never moves?
• Did you avoid making every image use the same effect?
• Did you mark uncertainty instead of presenting a guessed original prompt as fact?