# Skill: effect/grade-presets — "גריידינג צבע" (Colour grades)

Ready grades — warm, cool, vivid, cinematic, teal-orange, black-and-white, vintage, matte — plus fine-tuning.
גריידים מוכנים — חם, קר, חי, קולנועי, טיל-אורנג׳, שחור-לבן, וינטג׳, מאט — וכיוונון עדין.

Category: Looks & grades · לוקים וצבע · a real preview: https://media.gpt.org.il/lookbook/effects/grade-presets.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/grade-presets             // x-wait-ms: 110000
{
  "video_url": "https://media.gpt.org.il/samples/sample-he.mp4",
  "params": {
    "preset": "teal-orange"
  }
}
```

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

When it plays: the whole video — no timing fields.

## 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": "grade-presets",
      "params": {
        "preset": "teal-orange"
      }
    }
  ],
  "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 |
|---|---|---|---|
| `preset` | `"cinematic"` | `warm` · `cool` · `vivid` · `cinematic` · `teal-orange` · `bw` · `vintage` · `matte` | The grade |
| `brightness` | `0` | -1–1 | 0 = as it is; 0.05 is a subtle lift |
| `contrast` | `1` | 0–3 | 1 = as it is |
| `saturation` | `1` | 0–3 | 1 = as it is, 0 = black and white |
| `temperature` | `0` | -1–1 | −1 cool … +1 warm (added to the grade's own) |
| `vignette` | `0` | 0–1 | Dark corners (0 = the grade's own) |
| `sharpen` | `0` | 0–2 | 0 = none |

GET `/v1/effects/grade-presets` 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.