Orthotic labs: the photographed last is the SKU, not a generated foot
Identity hold on the insole photo. I2V only after the last is locked. Do not generate a foot.
Identity hold on the insole photo. I2V only after the last is locked. Do not generate a foot.
An orthotic lab sells a device: the last, the posted heel, the topcover, the mark on the shell. That object is already in a photograph. Motion is allowed. A generated foot is not. A photoreal plantar surface the model invented is a body, not a catalog cut, and it is anatomy you do not own. Photograph the last. Approve the jpeg. Then animate.
The last is the SKU
The last is the form the device is built on. The insole photo is the pack shot. Heel-cup depth, posting, cover color, the lab stamp on the underside — those are identity. Text-to-video asked for "a custom orthotic on a foot" will invent a cousin device on a cousin foot. The account that ordered this posting will see the miss before they see your logo.
Image-to-video starts from the frame you upload. Frame one is the file. Labels, posting, and the bench under the shell survive because they were already in the picture. The prompt is camera and physics: a slow orbit, a tilt that reveals the rear post, a hold on the stamp. Re-describing the device in the prompt is how the model starts drawing a second last.
Do not generate a plantar surface to "show fit." Fit is a clinic job. The lab job is the object. A generated foot is a generated patient. Residual anatomy, a child's heel, a photoreal gait — none of that is a SKU. Catalog the device. Do not invent the body.
If the still includes a real patient's foot from a fitting, crop it or shoot again. That foot is a private person. Generating a cleaner version of their anatomy is a new picture of a body you do not have a grant to use. Shoot the last on a bench. Then animate that.
I2V after picture lock, not a generated foot
Seedance 2.5 is the still-to-motion family: four to thirty seconds, native audio, 720p, 47 credits listed. I2V is the still-to-motion job on that family; the published URL is this slug. A lab reel needs the approved last, moving — not a mood of a gait lab.
Lock the still before you spend on motion is the credit argument. If the jpeg is the wrong colorway or the stamp is unreadable, every second of video is a miss of the same miss. Pause the still. Read the mark. Fail a shelf audit: reshoot. Do not prompt the model to "correct the posting."
Native audio is on. Write the mix you want — a quiet bench, no speech — or you will get a soundtrack you did not choose. A silent brief still gets audio. Do not write a clinician line into the motion prompt and call it a consult. Overlay a SKU string you typed if the feed needs a name.
A last frame is optional. Use one when you have a second approved still — underside then topcover, or shell then boxed SKU — and the shot is meant to land. A single hero still with a slow move is the usual catalog job. Thirty seconds of the same last is a long miss. Iterate at a length you would actually ship.
Labs vs clinics: nearby /for pages are not this job
/for/podiatrists is the clinic page: symptom-first search, gait on a treadmill, what actually resolves a morning heel. That audience is a clinician talking to a patient. This page is a lab talking to the account that ordered the device. Do not rewrite the podiatry page as a factory film. Do not put a generated gait under the lab SKU.
Physical-therapy pages are recovery arcs and exercise form. Day-one versus week-six is their shot. An orthotic last is not a recovery journey. If a PT clinic needs the device in frame, they film their own room. The lab still ships the photographed object.
A photoreal talking presenter walking through "how this insole treats plantar fasciitis" is a health-advice persona. That is the YouTube pattern in synthetic presenters on health and finance are a YPP kill. Labelling the face AI does not leave the bucket. Hold the device. A real named clinician on a different day if someone must speak.
What the motion prompt is allowed to do
Once the last is locked, the generate may:
- Move the camera around the shell. Orbit, tilt, a short push to the stamp.
- Add bench light that does not rewrite geometry. Not a new cover color.
- Land on a second approved still if you have one.
It may not:
- Grow a foot under the device.
- Smooth a posting the order specified.
- Typeset a diagnosis in the pixels.
- Cast a gait, a child, or a clinic corridor the photo did not contain.
The test is rude and useful. Pause on frame one. If you would not print that jpeg as the catalog cut, do not buy motion. If you would print it, describe only the camera. The last is the SKU. The foot is someone else's body.
FAQ
Can I prompt "an anatomically correct foot" so the insole sits right?
No. The foot is not the SKU. A generated plantar surface is a generated patient. Photograph the last on a bench. Animate the last.
Why Seedance 2.5 instead of text-to-video of a gait lab?
Because identity is in the still. Seedance 2.5 on the still-to-motion job is 4–30s, 720p, native audio, 47 credits listed. Text-to-video will invent a device and a body. The lab sold neither.
Is a talking clinician allowed if we label it AI?
A constructed expert prescribing an orthotic is the health-persona pattern YouTube named. Labelling it AI does not leave the bucket. Hold the device. Put a real named clinician on camera if someone must speak.
Do I need a last frame of the finished device?
Only when you have a second approved still and the shot is meant to travel from one fact to the other. A single locked last with a slow orbit is the catalog default.