Deck builds interpolate joists to the finished field
Same framing, two photos: Flux 3 first-last 5–20s at 9cr; a 30s identity hold invents new lumber, and /for/home-builders is a different audience than this deck still.
Same framing, two photos: Flux 3 first-last 5–20s at 9cr; a 30s identity hold invents new lumber, and /for/home-builders is a different audience than this deck still.
A deck ad that books is joists, then the same rectangle in decking: bay spacing, the ledger, the beam you actually hung. Text-to-video will invent a cousin porch. A thirty-second hold on one joist still will grow boards that were never on the takeoff. You already own both stills. Interpolate.
Frame A is joists; frame B is the finished field
Photograph the framing where it sits — same lens height, same ledger, same post line, same house behind it. Bare joists, hangers readable, the bay you sold. That is the first frame. Photograph the same rectangle after the field is down, or composite the finished field from a second still of the same geometry. That is the last frame. A different elevation is a morph.
First-last frame takes those two stills and generates the motion between them. Ordinary image-to-video knows where it begins and improvises the rest. First-last has to land. The arc of the shot is decided by you.
The two frames have to be plausibly connectable in the time available. Same opening, same camera, same lighting neighbourhood. A hanger macro morphing into a finished backyard is a warp, not a deck. Keep the rectangle.
A loop (the same still in both slots) is ambient motion on one plate. This offer needs two states. Do not use a last frame from a different SKU — 5/4 grooved into a 2x6 face, or a composite that grew a third post. The model will connect them. The connection is the artefact every carpenter notices. Crop a crew face. You need the lumber, not a private person.
Flux 3 interpolates the travel
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 for that interpolation: start frame and end frame, native audio, 720p or 1080p, durations from 5 seconds through 20. The listed rate is 9 credits per second. Audio is on — write the mix (a nailer, a quiet pad) 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 joists and the finished field. Name the mechanism: hold, then the decking fills the bays; camera locked; no new house, no new post. If the endpoints share geometry, the morph reads as a build. If they do not, you get a mushy crossfade you could have made in an editor without a video bill.
Start at 5s or 6s. Twenty seconds is the ceiling on this row. Pick the ratio you will ship before you interpolate. A 16:9 fill cropped to 9:16 throws away the ledger you used as an anchor. The product is the field. The field is in frame B.
A 30s identity hold invents new lumber
One still is not two states. Image-to-video from the joist photo will invent the field. The ending is then the model’s guess: a different bay, a cousin board, a rail that was not on the quote.
Seedance 2.5 is the family hold: 4s–30s in one pass, 720p ceiling, listed 47 credits, native audio. I2V is the still-to-motion job on that family, via the image-to-video tool. The published URL is this page, not a second Seedance slug. Thirty seconds is the identity ceiling, not a default. A thirty-second wander across one joist still grows lumber you did not hang. Iterate at 4s or 5s until the bays hold. A five-second hold that keeps the hangers is an ambient plate. It is not a finished field.
Do not morph board count. Do not turn 16-inch centres into 12-inch centres in flight. Text-to-video has no plate. “Cedar deck appearing on a suburban backyard at golden hour” decides whose joists. Average lumber is not this takeoff. Native audio will add a bed. Do not write a voiceover into the interpolation prompt. Spec as type you typed, after lock.
/for/home-builders is a different audience
Home builders document a house: foundation to frame to finish, a walkthrough, a model-home reveal. Two posts a week. 16:9. Instagram Reels and YouTube. That page is a build arc nobody films. It is not a deck rectangle.
A builder who interpolates an OEM deck jpeg as proof they framed the house has used the wrong still. The hung joists on this lot are the proof. A deck crew that copies the builder playbook — fake walkthrough, invented elevation — has used the wrong still the other way.
If a sentence in the brief contains “joists,” “field,” or “ledger,” you are on the photographed rectangle. If it contains “foundation,” “model home,” or “finish package,” you are on the builder page. Contractors want what is behind the wall. This listing wants the deck, joists then field.
Pause the last frame. Is that the lumber you sell, field down, bays still the bays? Yes: this job. No, a joist appeared or vanished: you did not own both photos. Two stills of the same rectangle. Interpolate.
FAQ
Can I animate one photo of the joists and hope the field appears?
You can. The ending is then the model’s guess. Deck work is the finished field on that framing. Pin the field still as the last frame or you are not selling the build.
Why Flux 3 instead of a 30-second identity hold?
Because the product is interpolation between two approved stills, not a long wander on one plate. Flux 3 first-last is 5–20 seconds, 720p/1080p, native audio, 9 credits per second. Seedance 2.5 will hold 4–30 seconds at 720p and 47 credits; thirty seconds of one joist still invents new lumber.
Do the two photos have to be shot on the same day?
They have to share geometry. Same rectangle, same lens family, same lighting neighbourhood. A noon still into a night still is a time-lapse you should prompt as one. A different house is a morph.
Is this the same as the home-builders /for page?
No. That page is foundation-to-finish on a house. This job is a deck still: joists, then the finished field, first-last on photos you took. Do not rewrite the builder playbook onto this ledger.