Open a folding fan: follow the ribs around one shared pivot

Original video brief; method not independently tested. No input image or generated result is supplied.

1. Task and source boundary

Show one manual folding fan opening from a narrow stack into a broad fan. The lower pivot remains in place while one outer guard sweeps outward, the ribs spread around that pivot and the folded leaf opens between them. The revealing action should make those connected parts readable together.

This is an original shot plan and visual inspection method. It is not a tested product demonstration or a claim about a particular model's accuracy. Use a conventional folding fan with two outer guards, ribs joined at one lower pivot, and a continuous pleated paper or fabric leaf. Exclude a rigid paddle fan, a motorized fan, an automatic opening mechanism, detached blades, and decorative transformations.

2. Prepare a readable input

Prepare a photograph or accurate drawing you own or have permission to use. Start with the fan slightly open so the shared pivot, both outer guards and several existing ribs can be distinguished. One hand steadies the lower grip and stationary guard; the other holds the moving guard above the pivot. Keep fingertips clear of the pivot center. The rest of both hands can remain near the frame edges.

Use a nearly overhead view, an unprinted fan leaf and a contrasting plain background. Leave enough space for the complete open fan. Identify a small existing detail beside the pivot as a fixed visual anchor. Choose a fan whose ribs and leaf attachment can be understood from the view; do not ask the model to invent a transparent leaf or a visible hidden mechanism. Adapt the sweep direction to the actual input.

3. Use the prompt in the current generator

Open the current image-to-video generator and use a mode that accepts your authorized image as a starting frame. Paste the full prompt, then check it against the actual guard positions and hand grips. Review the available settings and cost estimate before submission. This page supplies no image and starts no generation. The opening, spreading and final hold are suggested shot beats, not a special fan-control feature.

4. Complete prompt and sequence

Start from my authorized image of one slightly open manual folding fan, with two outer guards, several readable ribs, a continuous plain pleated leaf and one visible shared lower pivot. Keep a locked nearly overhead camera and fixed lighting. The original supporting hand holds the pivot region and the left guard in the same place. The other original hand moves only the right outer guard outward in the fan's own plane. Let the existing ribs spread progressively around the same lower pivot as the pleated leaf opens between them. Ribs initially hidden in the stack become visible by separation and reduced overlap; do not grow new ribs from the middle of the leaf. Preserve the pivot connection, rib lengths, two guard identities and the leaf's attachment to the ribs. The leaf unfolds into one continuous fan surface; do not stretch it like rubber, tear it, duplicate panels or create holes between attached panels. Keep the pivot and fixed guard stationary relative to the background detail. Complete one moderate opening motion, then hold the open fan and both grips still. Do not close and reopen it. No blade spinning, free-floating strips, detached guard, camera move, cut, print, lettering or extra hand. Keep the pivot and changing overlaps readable rather than making parts transparent.

Establish, about the first fifth: locate both guards, the shared pivot and the initial narrow spread. Record which hand and guard remain fixed.
Spread, about the middle three fifths: move the outer guard smoothly across the available frame. Inspect at least an early, middle and late spread; follow ribs from their lower attachment toward the opening leaf.
Hold, about the final fifth: stop at a broad but comfortable opening visible within the frame. Keep both grips and the open leaf steady. Do not add another opening cycle to fill unused time.

Adapt those proportions to the available clip length. No exact angle, rib count or execution time is promised by the prompt.

5. Inspect an actual output

For your generated clip, record a frame or time, observation and pass, fail or inconclusive judgment for each item. A beautiful open fan does not establish how it opened.

The same lower pivot stays beside the original background anchor; the whole fan does not translate to imitate opening.
The stationary guard remains fixed while the moving guard changes its angle around that pivot in the fan's plane.
Visible ribs remain joined at the pivot and keep coherent lengths. Additional visible ribs emerge from overlap, without branches appearing in the middle of existing ribs.
The continuous leaf opens with the rib spread. It does not become a rubber sheet, separate into flying strips or detach from the moving guard.
Intermediate overlaps change continuously. An abrupt swap from a narrow fan to a different open fan fails this sequence.
The ending preserves the same two hands, guards, pivot and connected leaf in one stable open state.
If fingers or the leaf hide the pivot during the critical sweep, mark pivot continuity inconclusive instead of inferring it from the ending.

6. Repair one failure at a time

The whole fan rotates: anchor the pivot and stationary guard to the background, and assign motion only to the other guard.
Ribs multiply visibly: begin with a slightly wider initial spread and describe newly visible ribs as previously overlapped parts; compare their lower connections across frames.
The leaf stretches between two sticks: make the existing pleats readable in the input and ask for unfolding between successively separating ribs.
The fan becomes spinning blades: remove wind, propeller or turbine language and repeat the single in-plane opening followed by a hold.
Hands hide the joint: revise the authorized input so the fingers grip beside, rather than over, the pivot. Do not repair visibility with transparent parts.
The far guard leaves the frame: leave more opening space or request a smaller spread; a camera pullback would weaken the fixed-anchor check.

7. Ending, saved result and limits

Finish with one open fan, its original lower pivot, two guards and continuous leaf still connected. Both hands hold their original roles. Save your own generated result through the available result controls and retain the exact prompt, input, settings and inspection notes.

No H3 execution, mechanism measurement, opening-force test or product durability claim is supplied. Screen-space gaps do not prove a real fan's construction or exact rib spacing. This brief reviews visible linkage and unfolding continuity only.

The accordion-paper task compresses a series of folds without a shared rib pivot. The iris-aperture task changes an opening between overlapping blades. This task spreads ribs and an attached continuous leaf around one shared pivot to reveal a broad surface. A different print, color or fan size would remain the same task.