# Heygen · v2 · Translate · Speed API

> 以速度為優先，將最長 8 分鐘的影片翻譯成 178 種語言之一

將影片語音翻譯為選定的 `output_language`，支援 178 種語言。來源影片最長可達 8 分鐘。選項包括僅翻譯音訊、說話者數量、針對不同語速語言的動態時長、品牌術語表 ID、自訂 SRT 檔案，以及 SRT 字幕輸出。此為較快速的版本。

- Model id: `heygen/v2/translate/speed`
- Made by: HeyGen
- Category: Lipsync & Avatars
- Output: video
- Price per second of your input video: $0.05 / second of input video (cheapest run $0.05 (50 API credits))
- Run: `POST https://api.doitong.ru/v1/run/heygen/v2/translate/speed`
- Quote: `POST https://api.doitong.ru/v1/quote/heygen/v2/translate/speed`
- Docs page: https://doitong.com/zh-TW/developers/models/heygen/v2/translate/speed

## Pricing

Price: **$0.05 / 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 $0.50 = 500 API credits (10 s input video × $0.05).

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/heygen/v2/translate/speed` 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 |
|---|---|---|---|---|---|---|
| `video_url` | `video` | string (video URL) | yes |  |  | 用於翻譯的來源影片 URL；影片長度不得超過 8 分鐘。 |
| `output_language` |  | enum (string) | yes |  | `English`, `Spanish`, `French`, `Hindi`, `Italian`, `German`, `Polish`, `Portuguese`, `Chinese`, `Japanese`, `Dutch`, `Turkish`, `Korean`, `Danish`, `Arabic`, `Romanian`, `Mandarin`, `Filipino`, `Swedish`, `Indonesian`, `Ukrainian`, `Greek`, `Czech`, `Bulgarian`, `Malay`, `Slovak`, `Croatian`, `Tamil`, `Finnish`, `Russian`, `Afrikaans (South Africa)`, `Albanian (Albania)`, `Amharic (Ethiopia)`, `Arabic (Algeria)`, `Arabic (Bahrain)`, `Arabic (Egypt)`, `Arabic (Iraq)`, `Arabic (Jordan)`, `Arabic (Kuwait)`, `Arabic (Lebanon)`, `Arabic (Libya)`, `Arabic (Morocco)`, `Arabic (Oman)`, `Arabic (Qatar)`, `Arabic (Saudi Arabia)`, `Arabic (Syria)`, `Arabic (Tunisia)`, `Arabic (United Arab Emirates)`, `Arabic (Yemen)`, `Armenian (Armenia)`, `Azerbaijani (Latin, Azerbaijan)`, `Bangla (Bangladesh)`, `Basque`, `Bengali (India)`, `Bosnian (Bosnia and Herzegovina)`, `Bulgarian (Bulgaria)`, `Burmese (Myanmar)`, `Catalan`, `Chinese (Cantonese, Traditional)`, `Chinese (Jilu Mandarin, Simplified)`, `Chinese (Mandarin, Simplified)`, `Chinese (Northeastern Mandarin, Simplified)`, `Chinese (Southwestern Mandarin, Simplified)`, `Chinese (Taiwanese Mandarin, Traditional)`, `Chinese (Wu, Simplified)`, `Chinese (Zhongyuan Mandarin Henan, Simplified)`, `Chinese (Zhongyuan Mandarin Shaanxi, Simplified)`, `Croatian (Croatia)`, `Czech (Czechia)`, `Danish (Denmark)`, `Dutch (Belgium)`, `Dutch (Netherlands)`, `English (Australia)`, `English (Canada)`, `English (Hong Kong SAR)`, `English (India)`, `English (Ireland)`, `English (Kenya)`, `English (New Zealand)`, `English (Nigeria)`, `English (Philippines)`, `English (Singapore)`, `English (South Africa)`, `English (Tanzania)`, `English (UK)`, `English (United States)`, `Estonian (Estonia)`, `Filipino (Philippines)`, `Finnish (Finland)`, `French (Belgium)`, `French (Canada)`, `French (France)`, `French (Switzerland)`, `Galician`, `Georgian (Georgia)`, `German (Austria)`, `German (Germany)`, `German (Switzerland)`, `Greek (Greece)`, `Gujarati (India)`, `Hebrew (Israel)`, `Hindi (India)`, `Hungarian (Hungary)`, `Icelandic (Iceland)`, `Indonesian (Indonesia)`, `Irish (Ireland)`, `Italian (Italy)`, `Japanese (Japan)`, `Javanese (Latin, Indonesia)`, `Kannada (India)`, `Kazakh (Kazakhstan)`, `Khmer (Cambodia)`, `Korean (Korea)`, `Lao (Laos)`, `Latvian (Latvia)`, `Lithuanian (Lithuania)`, `Macedonian (North Macedonia)`, `Malay (Malaysia)`, `Malayalam (India)`, `Maltese (Malta)`, `Marathi (India)`, `Mongolian (Mongolia)`, `Nepali (Nepal)`, `Norwegian Bokmål (Norway)`, `Pashto (Afghanistan)`, `Persian (Iran)`, `Polish (Poland)`, `Portuguese (Brazil)`, `Portuguese (Portugal)`, `Romanian (Romania)`, `Russian (Russia)`, `Serbian (Latin, Serbia)`, `Sinhala (Sri Lanka)`, `Slovak (Slovakia)`, `Slovenian (Slovenia)`, `Somali (Somalia)`, `Spanish (Argentina)`, `Spanish (Bolivia)`, `Spanish (Chile)`, `Spanish (Colombia)`, `Spanish (Costa Rica)`, `Spanish (Cuba)`, `Spanish (Dominican Republic)`, `Spanish (Ecuador)`, `Spanish (El Salvador)`, `Spanish (Equatorial Guinea)`, `Spanish (Guatemala)`, `Spanish (Honduras)`, `Spanish (Mexico)`, `Spanish (Nicaragua)`, `Spanish (Panama)`, `Spanish (Paraguay)`, `Spanish (Peru)`, `Spanish (Puerto Rico)`, `Spanish (Spain)`, `Spanish (United States)`, `Spanish (Uruguay)`, `Spanish (Venezuela)`, `Sundanese (Indonesia)`, `Swahili (Kenya)`, `Swahili (Tanzania)`, `Swedish (Sweden)`, `Tamil (India)`, `Tamil (Malaysia)`, `Tamil (Singapore)`, `Tamil (Sri Lanka)`, `Telugu (India)`, `Thai (Thailand)`, `Turkish (Türkiye)`, `Ukrainian (Ukraine)`, `Urdu (India)`, `Urdu (Pakistan)`, `Uzbek (Latin, Uzbekistan)`, `Vietnamese (Vietnam)`, `Welsh (United Kingdom)`, `Zulu (South Africa)`, `English - Your Accent`, `English - American Accent` | 影片翻譯的目標語言。 |
| `translate_audio_only` |  | boolean \| null | no | `false` |  | 將翻譯限制為語音軌，臉部保持不變。 |
| `speaker_num` |  | integer \| null | no |  |  | 影片中的說話者數量。 |
| `enable_dynamic_duration` |  | boolean \| null | no | `true` |  | 允許動態調整長度，使不同語言的語速差異不會中斷對話流程。 |
| `brand_glossary_id` |  | string \| null | no |  |  | 用於選擇 HeyGen 品牌術語表以自訂術語翻譯的識別碼。 |
| `srt_url` |  | string \| null | no |  |  | 可選的自訂 SRT 格式字幕檔案 URL。 |
| `srt_role` |  | enum (string) \| null | no |  | `input`, `output` | 指定提供的 SRT 是否屬於原始影片或其翻譯版本。 |
| `enable_caption` |  | boolean | no | `false` |  | 控制是否生成隨附翻譯影片的獨立 SRT 字幕檔案。 |

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
{
  "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
  "output_language": "English"
}
```

A fuller example:

```json
{
  "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
  "output_language": "English"
}
```

## 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/heygen/v2/translate/speed?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "output_language": "English"
  }'

# 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/heygen/v2/translate/speed?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "output_language": "English"
  }),
});
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 = {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "output_language": "English",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/heygen/v2/translate/speed", 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": "heygen/v2/translate/speed",
      "input": {
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
        "output_language": "English"
      },
      "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": "heygen/v2/translate/speed",
  "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": 500,
    "usd": "0.50",
    "charged": 500,
    "refunded": 0
  },
  "input": {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "output_language": "English"
  },
  "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
    },
    "caption_file": {
      "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
    }
  },
  "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} | 包含翻譯內容的影片檔案。 |
| `caption_file` | object {url, content_type, file_name, file_size} \| null | `enable_caption` 為 true 時生成的 SRT 字幕。 |

## Related models

- [Heygen · v2 · Video Agent](https://doitong.com/developers/models/heygen/v2/video-agent.md) (`heygen/v2/video-agent`): $0.937 / run
- [Heygen · v2 · Translate · Precision](https://doitong.com/developers/models/heygen/v2/translate/precision.md) (`heygen/v2/translate/precision`): $0.10 / second of input video
- [Kling AI Avatar 2.0 Pro](https://doitong.com/developers/models/kling-video/ai-avatar/v2/pro.md) (`kling-video/ai-avatar/v2/pro`): $0.115 / second of input audio
- [Sync Lipsync 3](https://doitong.com/developers/models/sync-lipsync/v3.md) (`sync-lipsync/v3`): $8.00 / minute of output video
- [VEED Fabric 1.0](https://doitong.com/developers/models/veed/fabric-1.0.md) (`veed/fabric-1.0`): from $0.08 / second of input audio
- [Heygen Lipsync - Precision](https://doitong.com/developers/models/heygen/v3/lipsync/precision.md) (`heygen/v3/lipsync/precision`): $0.10 / second of output video
- [Heygen Lipsync - Speed](https://doitong.com/developers/models/heygen/v3/lipsync/speed.md) (`heygen/v3/lipsync/speed`): $0.05 / second of output video
- [Heygen v5 Digital Twin](https://doitong.com/developers/models/heygen/avatar5/digital-twin.md) (`heygen/avatar5/digital-twin`): $0.10 / second of input audio

## Links

- HTML page: https://doitong.com/developers/models/heygen/v2/translate/speed
- 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=heygen/v2/translate/speed
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/heygen/v2/translate/speed