Create Dubbing Language

POST 
https://api.knoxstudio.ai/v1/dubbing/project/:project_id/language

Add another dubbed language. Billed at source duration × model rate. target_language is a BCP-47 tag.

Request

Path Parameters

Name	Type	Required	Description
project_id	String	Yes	Parent dubbing project ID.

Request Headers

Name	Type	Required	Description
Authorization	String	Yes	Bearer <token> Knox API key. xi-api-key is also accepted.
Content-Type	String	Yes	application/json

Request Body

Name	Type	Required	Description
target_language	String	Yes	BCP-47 language tag.
voice_settings.cloning_strength	Integer	No	0–10.
translations	Object	No	Optional per-segment translations. At most 20,000 entries.

cURL Example

curl -X POST https://api.knoxstudio.ai/v1/dubbing/project/proj_123/language \
     -H "Authorization: Bearer $KNOXCHAT_API_KEY" \
     -H "Content-Type: application/json" \
     -d '{"target_language":"ja","voice_settings":{"cloning_strength":5}}'

Response

Success Response (200)

JSON for the new language target (language_id, status).

Error Responses

Validation uses HTTP 422:

{
  "detail": [
    {
      "loc": ["body", "field"],
      "msg": "…",
      "type": "value_error"
    }
  ]
}

Other errors use { "detail": "message" }.

Status	When
400	WebSocket path called without Upgrade: websocket.
401	Missing or invalid API key.
402	Insufficient credits.
403	Token is not allowed to use this model.
404	Resource not found.
422	Validation error.
429	Rate limit exceeded.
500	Internal server error.