Move one tube pinch and follow the liquid band ahead of it

Original, untested video brief. No input image or generated result is supplied.

1. Task and boundary

Move a single roller along a soft transparent tube already filled with liquid. Follow three distinct features: the roller, the portion of tube flattened beneath it, and a colored liquid band ahead of that pinch. The tube stays anchored while the flattened location travels. Behind the roller, the same tube section opens again; ahead of it, the liquid band advances toward the outlet.

This original visual brief is untested. Use a short straight demonstration section with one roller already pressing the tube shut against a backing plate. The inlet has a visible liquid supply and the outlet is open, at a similar height, so neither end is an unexplained sealed boundary. Request one short forward pass, without reversing, measuring delivery or depicting a medical device.

2. Authorized first frame

Prepare an accurate drawing you own or are authorized to use. Show a horizontal transparent soft tube on a rigid backing plate, anchored at both ends outside the working span. Clear carrier liquid fills the tube, with one short colored liquid band ahead of the original roller. An inlet supply and outlet container remain visible at the sides.

Use an oblique view that shows the tube’s cross-section narrowing under the roller and its rounded section elsewhere. The roller axis crosses the tube, and a simple guide keeps its height relative to the backing fixed during rightward travel. Put a small existing mark on the outside of the tube behind the colored band to distinguish a fixed wall from moving liquid.

3. Use the generator

Open the current image-to-video generator in a mode accepting your authorized first frame. Paste the complete prompt, check the available settings and cost estimate, then submit only when ready. This page supplies text; it does not upload an image or start a generation.

4. Prompt and timing

Start from my authorized drawing of one anchored soft transparent tube filled with clear liquid and one colored liquid band ahead of a single roller. The roller already compresses the tube shut against its fixed backing plate. Keep the camera, plate, end anchors, inlet supply and outlet container still. Move the same roller slowly a short distance to the right along its guide while maintaining the compression. Let the flattened region travel with the roller along the original tube. As each section is left behind, reopen that same soft tube section without sliding the hose along the plate. Advance the existing colored liquid band rightward inside the tube ahead of the moving pinch, toward the open outlet. Keep the external tube mark fixed and the colored band within the lumen. Stop the roller before it reaches the colored band’s starting area and hold the local pinch. No new roller, broken tube, moving wall stain, sealed outlet, reverse pass, liquid teleport, camera movement, cut or claimed pumping rate.

Opening: distinguish the fixed tube-wall mark, existing pinch and colored liquid band ahead.
Middle: compare the moving pinch with the reappearing rounded tube behind it and forward liquid movement ahead.
Ending: stop the roller still pressing the tube and inspect the band’s new position relative to the fixed wall mark.

These beats are author suggestions, not exact model timing guarantees. Adapt their proportions to the clip length actually available.

5. Inspect the output

After inspecting your own output, record a time or frame, visible observation and pass, fail or inconclusive judgment for each condition. A convincing ending alone does not verify the preceding action.

The backing, end anchors and outside tube mark stay fixed.
One roller maintains a flattened region while that region moves along the tube.
Original tube sections reopen behind the departing roller.
The colored liquid band travels inside the tube, ahead of the pinch and toward the outlet.
The band is not a painted stripe sliding on the tube wall.
The tube stays continuous and does not grow a new branch or opening.
If the pinched silhouette or lumen is hidden, mark the compression-to-flow relationship inconclusive.

6. Fix one failure

The whole hose slides: emphasize the end anchors and fixed outside wall mark.
Liquid moves before the roller: establish a still opening, then link band advance to the pass.
The tube remains permanently flat: ask the same section behind the roller to reopen.
The colored band crosses the roller: shorten the pass and leave more initial separation.
The roller floats above the tube: fix the guide height and show the compressed contact region in the input.

7. Ending and limits

Finish with the roller holding a later tube section pinched, the earlier section reopened and the original liquid band farther toward the outlet.

Save your own generated result through the available result controls, together with the authorized input, exact prompt, settings and inspection notes.

No generated take, pump test or fluid-volume measurement is supplied. This sequence cannot prove complete occlusion, delivered dose, pressure, sterility or material suitability. A plausible moving band alone is insufficient if tube contact and recovery are hidden.

A fixed dispenser chamber pushes a dose during a downstroke; a trapped-air syringe changes one closed volume. This task instead moves the compression location along the tube and requires recovery behind it. Those extra spatial relationships must be visible, not inferred from liquid motion alone.