# Split-screen mechanism verdict — rebuild sheet

A doctor in a white coat explains a hair-loss mechanism while someone else's day-14 scalp-treatment footage runs in a band above his head — 46.95s, 4,286,225 views, 22,853 likes, by dr.andresromerotrc.

**Why it works** — The video opens on borrowed proof (a stranger's thinning crown, a dropper, "DIA 14") and then never lets that proof leave the screen: it docks it above the presenter for the rest of the runtime, so every sentence he says lands on top of a visible transformation. The white coat, the stethoscope and the name tag pinned in the corner turn footage he didn't shoot into evidence he appears to be certifying.

**The beats**

| Time | What happens | On-screen text |
|---|---|---|
| 3.76s | Full-bleed borrowed clip, no presenter. High rear view of a woman's head, dark curly hair in a bun, thinning patches at the crown, a hand tipping a dropper of oil onto the exposed scalp. Bedroom, white bedding, daylight. | DIA 14 / CURANDO MI PELO |
| 11.27s | Frame splits and stays split. Top band keeps the scalp clip running; bottom band is a seated young man in a white coat over blue scrubs, stethoscope on, medium-close, talking to camera. Product bottle composited at frame-left across the seam. | cabello · name tag "Dr. Andres Romero" |
| 18.78s | Identical framing. He keeps talking; top band still on the dropper at the part. | excalvo · name tag |
| 26.29s | Identical framing. Top band shows the bun with no hand in it. | romero · name tag |
| 33.80s | Identical framing. Hand back on the dropper above the scalp. | inactivo · name tag |
| 41.32s | Presenter and product unchanged below, but the top band swaps to a different borrowed clip — a curly-haired woman facing camera, smiling. | además · name tag |

The single words are auto-caption style, one word at a time as he speaks — they are not a built sentence, they're his speech. The name tag pill sits in every frame from the split onward.

**Not shown by the frames, so not claimed here:** what he actually says (there's no audio in the stills), whether the top band is one continuous clip or several cuts between the beats, and how it ends — the last still is at 41.32s of a 46.95s video, so the final ~5.6 seconds, including any call to action, is unseen.

**What carries the value** — The borrowed credential. A white coat, a stethoscope and a name tag held on screen for the whole runtime, welded to a transformation someone else filmed and running directly above his head, so his explanation reads as a verdict on it.

**Shoot it**

- **Camera:** two sources. The presenter is a phone on a tripod, locked, medium-close, chest and shoulders, eye height, and it does not move once across the whole take — every frame is identically framed. The top band is a clip you already have (a real day-N treatment video); it plays independently underneath nothing, it just sits above him.
- **Layout:** stack them — borrowed clip in the top band, presenter below, product bottle cut out and pasted standing at frame-left across the seam. Open full-bleed on the borrowed clip for about seven seconds before the split arrives.
- **Light:** soft daylight from frame-left, plain room, no lighting kit. The presenter's room is domestic — a wall, a bed edge at left, a lamp at right — not a set.
- **Wardrobe:** white coat over blue scrubs, stethoscope. One person, seated, no gestures needed beyond talking. Name-tag pill pinned bottom-centre of his band, present from the split to the end.
- **Text:** word-at-a-time captions, italic serif, white with a soft shadow, centred on the seam. Opening clip carries two stacked all-caps lines instead.
- **Casting note:** this one does not rebuild without a person. The persuasion is the credential on camera, so it needs a presenter who can carry it honestly — the claim your presenter makes has to be one they can actually make.

**Or generate it**

```
vertical 9:16 phone-camera frame split into two stacked bands. Top band: borrowed-looking clip of {SUBJECT} seen from behind and slightly above, hair gathered in a bun, scalp and part clearly exposed, another person's hand tipping a dropper of oil onto it, a bed with white bedding behind, plain daylight. Bottom band: a young presenter seated facing camera in a white medical coat over blue scrubs with a stethoscope around the neck, medium-close, chest and shoulders in frame, plain bedroom-office wall behind with a bed edge at left and a small lamp at right, soft daylight from frame-left, no retouching, slight grain. {PRODUCT} composited standing at frame-left across the seam between the two bands, label facing camera and legible. No on-screen text.
```

**Motion:** the presenter's camera is locked and unmoving for the whole beat — only his head and hands move as he speaks — while the top band plays its own continuous handheld footage independently.

**Text overlay pattern:** one word at a time, centred on the seam, italic serif, white with a soft shadow, changing on every beat as he speaks — `{word}` — over a small white name-tag pill pinned at the bottom of the presenter band for the entire runtime reading `{presenter name}`; the opening full-bleed clip instead carries two stacked all-caps lines, `{DAY COUNT}` / `{WHAT I AM FIXING}`.

**Reference:** https://www.instagram.com/p/DVvtqGCip0_/ — caption: "Ataca el problema de raíz con ingredientes naturales"
