# MiniMax H3 icon-morph prompt: one contour changes instead of two images fading

Request a continuous change in the outline of one fictional icon. A crossfade between two separately visible shapes is not the same task, even if its first and last pictures look correct.

**Original practice illustrations and an untested method.** No H3 task has been submitted and no generated result is included.

## 1. Establish the authored starting state

The first-frame PNG contains one centred teal rounded square on an empty warm canvas. The separate review-guide.svg shows the authored intended round endpoint for comparison. That guide is not a second input secretly uploaded by the generator link and is not a model result.

[Download the actual input PNG](/learning-assets/original-b-next-creative-20261022/continuous-icon-silhouette-morph/first-frame.png) · [Editable design SVG](/learning-assets/original-b-next-creative-20261022/continuous-icon-silhouette-morph/first-frame.svg)

## 2. Assign the moving and fixed roles

Track one filled region, its outer contour and its centre. The desired ending is a simple circle in the same part of the canvas. This exercise deliberately changes shape; it is inappropriate when an actual product silhouette must remain truthful.

1. Open only first-frame.png as the input. Keep the separate endpoint SVG for your own review, and do not describe that file as uploaded unless a later independently checked workflow actually uses it.
2. Ask for one contour change with a fixed camera. Leave rotation, translation, lighting sweeps and background transitions out so they cannot conceal a swap.
3. If you later generate a result, examine several intermediate frames for double contours or opacity fades before comparing the ending with the authored circle.

## 3. Prepare one manual generation attempt

Use the current **MiniMax H3 base image-to-video** controls. Under the currently documented site workflow, enable **Add end frame** to expose **First Frame**, upload only `first-frame.png` there and leave **Last Frame** empty. This draft does not use Fast, which needs a paired input. Recheck the actual available controls and credit estimate before any manual submission; these files neither upload themselves nor start generation. SVG files and the separate review guide stay local as design/review materials. No duration, resolution or endpoint capability is promised by this method.

[Download the practice package](/learning-assets/original-b-next-creative-20261022/continuous-icon-silhouette-morph/practice-kit.zip) · [Blank observation sheet](/learning-assets/original-b-next-creative-20261022/continuous-icon-silhouette-morph/acceptance.blank.csv)

## 4. Use the complete original draft

```text
Use the supplied original image containing one centred teal rounded square as the first frame. Keep the camera, empty warm background and teal fill unchanged. Gradually round the same single outer contour until the shape becomes a simple circle near the original centre. The contour changes continuously: do not place a second circle on top, crossfade between two visible icons, split the shape or cut to another picture. Do not add a logo, text, animated shadows, particles or an extra object. End with one solid round icon and hold. This is a requested visual transformation of an original geometric design, not a guarantee of exact endpoint control or preservation of a real product.
```

The copyable generator draft is the English version; the paired Chinese draft is included for review.

## 5. Inspect the actual result in sequence

Do not fill a pass from the input or from the intended ending. Enter observations only after examining actual result frames. The downloadable sheet has empty observation and result fields.

- One connected filled icon is visible throughout; it does not split into two.
- The contour changes rather than replacing one object with a second translucent object.
- The icon centre remains near its starting position and the background is stable.
- The ending is one simple round shape without lettering or new components.
- The endpoint guide remains labelled as authored reference material, not a generated result or a silently supplied last frame.

## 6. Repair one failure without changing the task

- A circle fades in over the square: remove transition/fade wording and explicitly inspect the intermediate double outline. If exact shape interpolation is required, use the SVG in an editor instead.
- The shape spins or slides: retain only contour change and centre stability before trying stylistic motion.
- The ending remains uneven: record that failure; do not rename an approximate frame as exact circle control or claim the guide was followed automatically.

## 7. Save the ending and choose the right next task

Save beginning, intermediate and ending observations separately. A clean final circle cannot by itself prove that the middle was a continuous one-shape morph.

This is an original untested method with no model output. It proves neither H3 last-frame support nor accurate brand-mark transformation. Real product shape consistency is a different objective.

For a contrast that must preserve card identity and outline, use the single-card slide exercise. Use this morph exercise only when the design itself is fictional and an intentional contour transformation is the requested outcome.

- [MiniMax H3 card-slide prompt: separate one top card and retain the two-card stack](/templates/single-card-slide-stack-separation)
- [subject foreground occlusion pass](/templates/subject-foreground-occlusion-pass)