# Flux 3 FAST Edit Video API

> ᡤᡠᠰᡳᠨ ᡳ ᡤᡝᠪᡠᠮᡝ ᡩᡠᠯᡳᠨ ᡳ ᡩᡠᠯᡳᠨ ᠪᡝ ᡝᠮᡤᡝᠯᡝᠮᡝ ᡤᡝᠨᡝᡵᡝᠮᡝ, ᡠᠨᡩᡝᠰᡳ ᡠᡨᡠ ᡤᡝᠨᡝᡵᡝ ᡠᡨᡠ ᠵᡠᠯᡝᡵᡳ ᠪᡝ ᠰᠠᠮᡝ ᠪᡳᠮᡝ

ᡝᠮᡠ ᡳᠯᡥᠠᠴᡳ ᡤᡝᠯᡳ ᡥᠠᠴᡳᠨ ᡳ `prompt` ᡝᠮᡠᠯᡝ 4096 ᡥᡝᠰᡝ ᠪᡝ ᠰᡳᠨᡳᠶᠠᠨᠠ ᡝᠮᡤᡳ ᡠᠯᡥᠠᠴᡳᠨ ᡳ ᡳᠰᡥᡠᠨ ᠣᠨᠣᠯᠣᠨ᠉ `video_url` ᡩᡝ ᡳᠯᠠᠩᡤᠠ ᠪᡝ MP4 ᠣᠨᠣᠯᠣᠨ 50 MB ᠴᡝ ᡝᠮᡠ ᡝᠮᡠ 15 ᠰᡝᡮᡝ ᠴᡝ ᠵᡠᠯᡝ ᠣᠮᠪᡳ᠉ ᡠᠯᡥᠠᠴᡳᠨ ᡳᠰᡥᡠᠨ ᡳ ᠶᠠᠪᡠᠨᠠᠩᡤᠠ᠂ ᡠᠯᡤᡳᠶᡝᠨ ᡠᠨᡩᡝᠰᡳ ᠵᡠᠯᡝ ᡝᠮᡤᡳ ᠵᠠᠯᡠᠨ᠉ ᡠᠮᡝ ᡳᠰᡥᡠᠨ ᡳ ᠰᡠᠯᡤᠠᠨ ᡠᠯᡥᠠᠴᡳᠨ ᠪᡝ ᡳᠯᠠᠩᡤᠠ ᠵᠠᠯᡠᠨ᠉ ᠵᡠᠯᡝ ᡝᠮᡠ ᠵᡠᠯᡝ ᠵᠠᠰᡳᡴᠠᠨ ᠣᠮᠪᡳ: `safety_tolerance`, 0 ᠴᡳ 4 ᡩᡝ ᠣᠮᠪᡳ᠉

- Model id: `blackforestlabs/flux-3/edit-video`
- Made by: Black Forest Labs
- Category: Video to Video
- Output: video
- Price per second of your input video: $0.03 / second of input video (cheapest run $0.03 (30 API credits))
- Run: `POST https://api.doitong.ru/v1/run/blackforestlabs/flux-3/edit-video`
- Quote: `POST https://api.doitong.ru/v1/quote/blackforestlabs/flux-3/edit-video`
- Docs page: https://doitong.com/mnc/developers/models/blackforestlabs/flux-3/edit-video

## Pricing

Price: **$0.03 / second of input video**. Price per second of your input video: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

The full example input below costs $0.30 = 300 API credits (10 s input video × $0.03).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/blackforestlabs/flux-3/edit-video` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  | ≤ 4096 characters | ᠝ᡵᡝᠮᡝ ᠪᡠᠮᡝᠨᡳ ᡥᡡᠯᠠᠨ, ᠵᠠᠯᡠᠮᡝ ᡝᡵᡝᠮᡝ ᠰᡠᠨᡤᠠᡳ ᠮᡠᠨᡳ ᠠᠰᡠᠮᠪᡳ. |
| `safety_tolerance` |  | integer | no | `2` | 0 – 4 | ᠰᡠᠨᡤᠠᡳ ᠠᠮᠠᠯᠠᠨ ᡩᠠᠮᡠ 4 ᠠᠴᠠ 0 ᡩᡝ ᡳᠯᡝᠨᡳ ᠵᠠᠯᠠᠨ. |
| `video_url` | `video` | string (video URL) | yes |  |  | 15 ᠰᡝᡴᡠᠨᡩ ᠠᠴᠠ ᡳᠯᡝᠨᡳ ᠪᠠᡳ 50 MB ᠠᠴᠠ ᠠᠯᡳᠨ MP4 URL. |

File parameters (`video`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
}
```

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/blackforestlabs/flux-3/edit-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/blackforestlabs/flux-3/edit-video?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/blackforestlabs/flux-3/edit-video", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "blackforestlabs/flux-3/edit-video",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "blackforestlabs/flux-3/edit-video",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 300,
    "usd": "0.30",
    "charged": 300,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  },
  "output": {
    "video": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_name": "0-output.mp4",
      "file_size": 1843200
    },
    "seed": 42
  },
  "outputs": [
    {
      "type": "video",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_size": 1843200,
      "width": 1280,
      "height": 720,
      "duration": 5,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size} | ᠮᠣᠳᡝᠯ ᠪᡠᠶᡝᡥᠠᠨ ᠰᡠᠨᡤᠠ. |
| `seed` | integer | ᠪᡠᠶᡝᠮᡝᠨᡳ ᠰᡝᠨᡩᡝᠨᡳ ᠵᠠᠯᡳᠨ᠉ |

## Related models

- [Flux 3 Action](https://doitong.com/developers/models/flux-3-action/so101.md) (`flux-3-action/so101`): $0.003 / run
- [Flux 3 Draft Enhance](https://doitong.com/developers/models/blackforestlabs/flux-3/draft-enhance.md) (`blackforestlabs/flux-3/draft-enhance`): $3.48 / run
- [Flux 3 Extend Video](https://doitong.com/developers/models/blackforestlabs/flux-3/extend-video.md) (`blackforestlabs/flux-3/extend-video`): from $0.41 / second
- [Flux 3 Extend Video Draft](https://doitong.com/developers/models/blackforestlabs/flux-3/extend-video/draft.md) (`blackforestlabs/flux-3/extend-video/draft`): $0.12 / second
- [AMT Interpolation](https://doitong.com/developers/models/amt-interpolation.md) (`amt-interpolation`): $0.000575 / second of processing time
- [AnimateDiff Turbo · Video to Video](https://doitong.com/developers/models/fast-animatediff/turbo/video-to-video.md) (`fast-animatediff/turbo/video-to-video`): $0.00125 / second of processing time
- [AnimateDiff · Video to Video](https://doitong.com/developers/models/fast-animatediff/video-to-video.md) (`fast-animatediff/video-to-video`): $0.00125 / second of processing time
- [Auto-Captioner](https://doitong.com/developers/models/auto-caption.md) (`auto-caption`): $0.10 / video

## Links

- HTML page: https://doitong.com/developers/models/blackforestlabs/flux-3/edit-video
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=blackforestlabs/flux-3/edit-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/blackforestlabs/flux-3/edit-video