# Skill: effect/presenter-circle — "דובר בעיגול" (Presenter circle)

The speaker in a circle with a coloured ring over a designed plate, optional words on an arc.
הדובר בעיגול עם טבעת צבעונית על רקע מעוצב, ואפשר מילים על קשת.

Category: Layouts · פריסות מסך · a real preview: https://media.gpt.org.il/lookbook/effects/presenter-circle.mp4?v=mv19exzc
Price: **60 credits per finished minute**: the render itself — 1 credit per second of 1080p output. Combined with captions, a hook or other effects: still one render, nothing more for combining.

Base URL: `https://apihub.co.il` · Auth: `Authorization: Bearer <API key>` · Docs: `/docs` (group "Video Effects")
Send `X-Tag: <job name>` on every call of one video; `GET /v1/usage?tag=<job name>` returns what it cost.
**Files are kept 24 hours** — download the finished video.

---

## 1. On its own — one call

```jsonc
POST /v1/effects/presenter-circle             // x-wait-ms: 110000
{
  "video_url": "https://media.gpt.org.il/samples/sample-he.mp4",
  "start": 0.3,
  "duration": 4.4,
  "params": {
    "arc": "יש נוסחה להצלחה",
    "focus_x": 0.63,
    "focus_y": 0.5
  }
}
```

A normal render: `status: processing` → poll `GET /v1/executions/{id}` until `completed`, then read `output.url`.

When it plays: a stretch: `start` + `duration` (seconds of the finished video), or `at` (a word id) + `duration`, or `during` { from, to } (word ids).

## 2. With captions, a hook and other effects — the same render

```jsonc
POST /v1/studio/edit               // x-wait-ms: 110000
{
  "video_url": "<the video>",
  "language_code": "he",
  "captions": {
    "style": "classic"
  },
  "effects": [
    {
      "id": "presenter-circle",
      "params": {
        "arc": "יש נוסחה להצלחה",
        "focus_x": 0.63,
        "focus_y": 0.5
      },
      "start": 0.3,
      "duration": 4.4
    }
  ],
  "audio": {
    "normalize": true
  },
  "output": {
    "aspect_ratio": "9:16",
    "resolution": "1080",
    "fit": "crop",
    "quality": "high"
  }
}
```

`effects` is a list: add more entries for more effects. The engine applies them by pipeline stage (cuts and time →
camera → grade and looks → overlays → text and captions → sound), never by their order in the list. An edit has one
`transition`, one `color` grade, one `music` bed, one `speed` and one caption style: two effects that set the same
one are refused with a message that names them.

## 3. Params

| param | default | range / options | what it does |
|---|---|---|---|
| `plate` | `"dots"` | `black` · `dots` · `grid` · `gradient` · `frame` · `white` · `white-dots` · `white-grid` | The background pattern |
| `x` | `50` | 0–100 | Circle centre, % of the width |
| `y` | `34` | 0–100 | Circle centre, % of the height |
| `size` | `62` | 10–95 | Diameter, % of the width |
| `ring` | `"#D0F808"` | string | The ring's colour |
| `zoom` | `1.35` | 1–4 | How close the face is |
| `focus_x` | `0.5` | 0–1 | Where the face is in the video: 0 left … 1 right |
| `focus_y` | `0.33` | 0–1 | …and 0 top … 1 bottom |
| `arc` | `""` | string | A short phrase on an arc over the circle |

GET `/v1/effects/presenter-circle` returns the same as JSON (with the full body schema). Every field has a default; numbers
outside their range are refused with the field's name.