Window ads live or die on the reflection in the glass
Veo native audio plus glass is a Veo job. Seedance if the window SKU must match the still.
Veo native audio plus glass is a Veo job. Seedance if the window SKU must match the still. A window ad is not a pretty suburban elevation. It is a pane, a frame, and whatever the glass is doing: rain, a street, a tap, a reflection the buyer will compare to the house they already own. If that reflection is a different street, the clip is not an install. It is a drawing of someone else's facade.
Physics and sound on glass is one job. The actual SKU on the actual wall is the other. Mixing them is how a four-second rain take becomes a mis-shipped product.
Glass that has to sound like glass
Rain on a pane, a knuckle on the lite, traffic in the reflection — those are picture and soundtrack in the same pass. Veo 3.1 is the catalog row for that: native audio on unless you turn it off, 4 / 6 / 8 second clips, 720p / 1080p / 4K, cinematic physics. Speech, room, and effects are not a second product you hope to lip-sync later. A silent plate of "window" is a different brief.
Write the sound into the prompt if you are on this row. A muted rain clip is a defect, not a grade. Audio on is 40 credits a second; audio off is 20. Durations do not go past eight seconds. A thirty-second hold of a pane is not Veo's job.
Use Veo when the ad is the behaviour of glass — weather, a tap, a night interior lighting up — and you are not claiming a numbered SKU on a named house. The model will invent a facade. That is allowed only when invention is the brief.
When the SKU has to be that window
A vinyl slider on a photographed elevation is a product. Grille pattern, sash thickness, hardware colour, the brick it sits in — those are claims. Text-to-video will invent a prettier unit with a melted lock and a street that does not exist on that lot. The homeowner already knows the driveway.
Seedance 2.5 is the family for the still-to-motion job: image-to-video from a locked plate, four to thirty seconds in one pass, native audio with the picture, 720p as the ceiling on the I2V row, optional last frame when the move has a destination. Image-to-video keeps frame one as the file you sent. Prompt only the camera: a slow push to the meeting rail, a drip that was already in the still, a hold on the lock. Do not re-describe the house.
If you have a second approved still — interior looking out, night with lights on — attach it as a last frame. That is control. Do not invent a lifestyle last frame the crew never shot. Seedance I2V is still the still-to-motion job is the router; this page is only why a window SKU uses it.
The reflection is the tell
The buyer does not grade your model. They grade the glass. A T2V take that "looks expensive" will still put a car or a neighbour in the pane that was never on that street. Window work is adjacency plus optics. The reflection is evidence.
Photograph the install. Animate that photograph when the unit has to remain itself. Run Veo when the shot is weather and sound and you are honest that the house is not the SKU. A wetter cinematic pane is usually the invented street. Length is a dial on Seedance. Identity is not.
FAQ
Can I prompt Veo to "match this photo" instead of uploading it?
No. A sentence is not a plate. Veo will still invent the facade and the reflection. If the unit must match, upload the install still to image-to-video and describe only the camera.
Is rain-on-glass always a Veo take?
When the brief is weather and native audio on a cinematic pane, yes — 4 / 6 / 8 seconds, audio on. When the brief is this window on this wall, Seedance from the still. Rain can be in the plate already. Do not buy a new house to get a drip.
Do I need a last frame for a day-to-night window?
Only if you have a second approved still of that same opening. Unrelated night stock is a warp, not a transition. A single hero still with a slow move is the usual SKU job.
Is 720p enough for an install clip?
For feed and a Google Business clip, yes. The lot identity matters more than a 4K invention of a different lot. If delivery needs a higher-resolution master, start from the same locked still on a row whose ceiling matches — do not switch to text-to-video to chase 4K.