Crawl-space liners must not morph mid-clip
Image-to-video from the installed vapor barrier on Seedance 2.5 holds the membrane; text-to-video invents a different crawl.
Image-to-video from the installed vapor barrier on Seedance 2.5 holds the membrane; text-to-video invents a different crawl.
A liner listing is a specific install: this poly, this tape, this pier, this dirt that is no longer showing. The buyer knows the hatch they crawled through. If the clip morphs the membrane into a different crawl — new piers, new seams, a cleaner grade that was not on the job — you are advertising a house you did not encapsulate. Photograph the installed liner. Animate that still. Do not prompt a basement.
The installed liner is the still
Shoot the finished crawl: seams taped, piers wrapped, ground cover continuous, the same mechanicals that were on the job. That JPEG is the contract. Labels on a dehumidifier, a sump lid, a stamped pier — they survive because they are in the file.
Image-to-video starts from the frame you upload. The prompt is camera and physics: a slow push along the liner, a hold on a taped seam, light sliding on poly. Do not re-describe the mil thickness in the video prompt. Do not ask the model to "show a thicker barrier." Thickness is a spec sheet and an overlay, not a morph.
Crop out the crew's legs, a coffee cup, a face in a hatch. Do not prompt those out and hope the model rebuilds the liner. The cheap place to lock the crawl is the photograph.
A last frame is control when you have a second approved still of the same bay — open dirt as first, liner down as last — and the interpolate is between two facts. A single hero still of the finished membrane with a slow move is the usual listing. A last frame that is a different house is a warp.
Seedance 2.5 holds the membrane
Seedance 2.5 is the still-to-motion family: four to thirty seconds, 720p, listed 47 credits, native audio with the picture. I2V is the job on that family; the published URL is this slug. One pass from a locked frame is how the poly does not become a cousin plastic at second eighteen. Stitching four short clips around a crawl is how seams drift.
Seedance I2V is still the still-to-motion job is the router. This page is only the liner. Prompt camera only. Native audio here is a bed with the picture. Write silence if you do not want invented crawl-space drip, or write the mix. A silent brief on a native-audio row still gets a soundtrack you did not choose.
720p is the ceiling. That is enough for a membrane pass in feed. It is not a reason to skip the still. A 30-second miss of the wrong crawl is billed as a long video job. Iterate at a length you would actually ship. Thirty seconds of the same bay is a long miss if second four already warped.
Optional last frame when the move has a destination: start on the hatch, land on the far pier, both stills of the same install. Do not set a stock "finished basement" as the end. The model will connect them. The connection is the artefact everyone notices.
Text-to-video invents a different crawl
Text-to-video has no plate. "Encapsulated crawl space, white vapor barrier, clean piers, cinematic flashlight" is an average of every liner clip the model has seen. Average is not your tape. Average is a bay that does not exist under that house.
That is the same fork as any SKU: if a drifted membrane is a failed take, you do not have a T2V problem. You have a missing still. Make the still. Then animate it.
Morph mid-clip is the specific failure here. Poly is a continuous sheet. Viewers track the seams. When a video model "improves" a wrinkle, it often invents a second fold, a new pier, a shifted mechanical. Pause at second two and second twelve. If the liner is not the same liner, throw the take out. Do not grade your way out of a morph.
Do not use T2V because the crawl was dark and the photo is ugly. Light the photo. Shoot again. A noisy still you own is truer than a pretty crawl you do not.
Contractors and pest control are nearby, not this SKU
Contractors already have an audience page: general trade, job-site motion, a crew story. That is not an encapsulator listing. A general contractor page can show a framed wall. This page has to show this membrane.
Pest control companies sit next door on moisture and termites. Their still is often a bait station or a treated perimeter, not a 12-mil liner. Do not copy pest-control prompts onto encapsulation. Do not generate a technician explaining radon, mold, or health outcomes as a photoreal adviser — that is a different kill. The liner is a building SKU. Overlay the spec if you need a mil number. Keep a mouth off the generate.
The test: would a homeowner who owns that hatch recognise the bay with the sound off? If no, you animated a paragraph. If yes, you held the install.
FAQ
Can I prompt "match this crawl" in text-to-video instead of uploading the photo?
No. A sentence is not a plate. The model will still invent piers and seams. Upload the installed-liner photo to image-to-video and describe only the camera.
Why Seedance 2.5 instead of a short cinematic T2V row?
Because the product is the membrane you installed, moving, not a pretty basement. Seedance 2.5 is 4–30s, 720p, 47 credits, native audio. One pass from the still is how the poly does not morph.
Do I need a last frame of the finished liner?
Only when you have a second approved still of the same bay and the shot is meant to travel from open ground to done. A single hero still with a slow move is the usual job.
Is this the same as the contractors audience page?
No. Contractors is general trade marketing. This is the encapsulator SKU: installed vapor barrier, identity hold, no invented crawl. Pest-control is a third still. Name the object.