Oil-to-gas copy is overlay on a locked burner

The authored fuel-swap line is add-text-overlay; transcription captions have nothing to listen to on a silent burner plate.

An oil-to-gas clip that books is a locked burner — the unit you convert, the flue you already shot — plus a line you typed: the fuel swap, the CTA, the booking window. It is not a talking installer diagnosing the house, and it is not a caption pass on a file that never spoke. Lock the plate. Burn the copy. Do not ask a transcriber to invent a lecture.

The burner plate is locked first

The product is hardware in a real mechanical room: burner, oil tank or the space it left, gas train, the flue. Photograph the unit you convert. Same angle a homeowner will recognise. Crop people. Crop a neighbour’s utility. The still is the contract.

Motion is optional. If the plate needs a slow push or a light rake, animate the photograph. Do not text-to-video “oil furnace converting to gas in a suburban basement.” That paragraph will invent a cousin burner and a cousin house. The conversion you sell is this unit, or it is a generic plate you will label as a render, never as last Tuesday’s job.

HVAC companies are the local installer calendar: pre-summer AC checks, pre-winter furnace tune-ups, posted four to six weeks before peak. Two posts a week. 9:16. Facebook and YouTube Shorts. Film ideas on that page are work in progress, a thermal-camera find, a technician intro. That page is seasonal urgency. This page is one conversion line on one locked burner. Do not rewrite the HVAC /for as a talking fuel lecture.

Contractors own process transparency: demo day, what is behind the wall, a final walkthrough. A fuel swap is not a remodel arc. Do not twin the demolition time-lapse as a second burner plate.

If the nameplate has to be yours, keep it in frame and overlay the model string if the stamp is postage-size. Do not prompt a new badge.

Fuel-swap copy is overlay

The line is yours: “Oil to gas this season.” “We convert the burner you have.” “Book the swap.” Write it. Do not ask a model to letter it into the cabinet.

Add a text overlay to a video burns one authored line for the whole clip. Position is top, center, or bottom. Font size, color, and an optional background block are controllable. It does not transcribe. A mute burner has nothing to listen to. That is the job.

One string, whole duration. If you needed three beats — “oil,” then “gas,” then the CTA — that is timed overlays, each with start_sec / end_sec, not one persistent badge split into extra fields. Picture lock first. Overlay before you crop to 9:16 and you will pay twice: the line that sat clean on a basement still sits in the chrome after a vertical reframe.

Offers change. Booking windows change. The burner should not. Copy lock can be later than picture lock. If either is open, do not burn.

Do not bake the fuel-swap sentence into a generate prompt. Prompted glyphs are a misspelled CTA you regenerate to fix. Type after lock.

Caption generator listens; a silent burner has nothing to say

AI caption generator does both jobs the word “captions” covers, and keeps them separate. Subtitles are transcribed from speech and burned in a chosen style. Overlays are text you wrote. A silent burner plate is the second job. Running the first job on it is a spend on a file that had nothing to transcribe.

Add captions to a video is the editor door for the speech path. Give it a clip with no audible words and you have captioned silence. Previewing a style on a mute plate will not typeset “oil to gas.” It will show you a look on empty audio.

The test: who wrote the words, and did anyone speak them?

• You wrote them and they never left a mouth: overlay.
• A real named tech said them on a later take: caption that take.
• Nobody spoke and you hoped the tool would invent the fuel-swap line: that is how caption credits disappear.

Do not glue a constructed technician onto the burner so the captioner has something to hear. That mouth is a second asset. The plate does not need it.

Seasonal copy overlays the unit; it does not invent the basement

HVAC marketing is almost entirely reactive around emergency calls. Fuel-swap content is the opposite: a planned conversion, a locked unit, a line you already approved. Seasonal type can sit on the plate. It cannot invent the house.

Do not:

• Prompt “Maya from HVAC explaining why you should switch fuels.”
• Run auto-captions on a music-only basement clip hoping the CTA appears.
• Generate a talking installer as proof that the conversion happened.

A real named tech on camera is a different day, on a file that is not pretending to be the burner. Caption that file. Overlay the swap line on the silent plate. Keep the jobs apart.

Pause the keeper. Is the burner the unit you convert, is the file silent, and is the fuel-swap sentence type you typed? Yes: ship. No: you used a transcriber as a copywriter, or you used a presenter as a furnace.

FAQ

Will the caption generator write “oil to gas” if I describe it in the prompt?

No. Transcription listens. Overlay burns a line you wrote. A silent burner has nothing to transcribe. Type the swap line into add-text-overlay, or record a real named person and caption that take.

Can an HVAC shop run the contractor /for playbook on this conversion?

Not as a substitute for the burner plate. Contractors is demo-to-walkthrough process. HVAC companies is a seasonal install calendar. Oil-to-gas copy is overlay on a locked burner. A generated basement is not a conversion.

One overlay or timed lines?

One persistent swap badge is a single overlay on the whole file. “Oil,” then “gas,” then a CTA is timed overlays, with timestamps you set. Neither job transcribes. Neither job belongs in a motion prompt.

Do I need a photo of the actual burner?

If the unit has to be this job — nameplate, flue, the tank that came out — yes. Photograph it. Animate that still if you need motion. A generic burner render is a plate you label as a render, never as the install.