Silicone molds: first-last filled cavity to released shape

Own both photos. The cavity geometry cannot morph.

A silicone-mold ad that sells the tool is filled cavity, then released shape. Two states of one cavity. The buyer is matching undercuts, a sprue, the wall that will actually pull. Text-to-video will invent a cousin tray. Ordinary image-to-video will start on your still and improvise a different cavity by second four. First-last has to land. You already own both stills. Interpolate.

Frame A is filled; frame B is released

Photograph the mold you sell — same lens height, same bench, same lighting family. Filled: the cavity holding compound, the part still in the tool. Released: the same tool empty, or the demolded shape next to the same cavity, depending on which beat the SKU is. Those are the endpoints.

First-last frame takes two stills and generates the motion between them. Ordinary image-to-video knows where it begins and guesses the rest. First-last has to arrive. The arc of the shot is decided by you.

The two frames have to be plausibly connectable in the time available. Same mold, same camera, same bench. A close-up of a filled well morphing into a different cavity on a different table is a warp, not a demold. Keep the tool.

Handmade crafters is the person using a mold. Manufacturers is the plant. This page is the mold brand: cavity geometry as the SKU. Do not rewrite those pages as a kitchen craft film or a factory tour. The cavity is the product.

Interpolation is the demo

Create a first-and-last-frame transition video is the named agent job: two photos in, one transition out. The agent passes them as first and last frame and picks a first-last-capable model. Cost is priced per model, shown before you confirm. This is not the plain "turn one photo into a video" capability.

Flux 3 First Last Frame to Video is the catalog row: start frame and end frame, native audio, durations from 5 seconds through 20, listed 9 credits. The description names up to 1080p. Audio is on — write the mix (a quiet pull, a bench) or write silence. A silent brief still gets a soundtrack you did not choose.

Prompt the travel, not the objects. The stills already contain the cavity and the released shape. Name the mechanism: hold, then the part leaves the well; camera locked; no new cavity. If the endpoints share geometry, the morph reads as a demold. If they do not, you get a mushy crossfade you could have made in an editor without a video bill.

Do not treat a loop (same still in both slots) as this ad. A loop is ambient motion on one plate. This offer needs two states.

The cavity cannot morph

Geometry is the claim. Wall thickness, undercut, the number of wells, the brand lockup on the backer. Flux will connect whatever you give it. If frame B is a different SKU, the connection is a different mold. Buyers notice that before they notice your logo.

Do not:

• Use a last frame from a competitor's tray "because the release looks cleaner."
• Prompt "improve the cavity" or "smoother walls" while interpolating. That is a new print.
• Swap a food-grade well for a resin well in the second still and call it the same product.
• Start from a paragraph about "a silicone mold releasing a perfect shape." That rebuilds the tool.

Image-to-video from one photo is open-ended motion. Fine for a slow push across a locked hero still. It will not land on the released shape unless that shape is a last frame you attached. Missing the empty cavity is a different job.

If you needed a founder line about cure time, that is a different generate, cut after the release. The cavity shot does not have to talk. Durometer, cycle, and lot belong as type you typed, not as glyphs Flux painted into the bench.

Two photos, one tool, then stop

Shoot A and B the same morning if you can. They have to share geometry more than they have to share a calendar. Noon into a night still is a time-lapse you should prompt as one. A different bench is a morph.

Hold the stills at full size. Would you print them on a sell sheet? If no, you are not ready for Flux. If yes, pick a length inside 5–20 seconds. A 20-second miss is a long miss of the same warp. Start at 5s or 6s until the cavity holds.

Native audio will add a bed. Do not write a voiceover into the interpolation prompt and expect a named host. Score later, or accept the mix. Lips do not belong on this SKU.

The test: pause the last frame. Is that the mold you sell, empty or with the part you actually pulled? Yes: this job. No, a well appeared or vanished: you did not own both photos, or you asked the model to redesign the tool.

FAQ

Can I animate one photo of the filled mold and hope it releases?

You can. The ending is then the model's guess. The product is the released shape of this cavity. Pin that still as the last frame or you are not selling the pull.

Why Flux 3 instead of a talking-head model?

Because the product is interpolation between two approved stills, not a mouth. Flux 3 first-last is 5–20 seconds, listed 9 credits, native audio. A presenter row will talk over a cavity it invented.

Do the two photos have to be the same pour?

They have to be the same tool. Same cavity, same lens family, same lighting neighbourhood. A different well count is a different SKU. A second pour of the same mold is allowed if the geometry matches.

Is this the same as uploading one image to image-to-video?

No. One image is open-ended motion. Two images is a bounded landing. The agent notes that this capability needs first frame and last frame. Missing the released shape is a different job.