---
title: "Translate an existing project"
method: POST
path: "/actions/translations_start"
tags: ["translations"]
---

# Translate an existing project

`POST /actions/translations_start`

## Request

- Base URL: `https://api.voicecheap.ai/v1`
- URL: `https://api.voicecheap.ai/v1/actions/translations_start`
- Auth: one of:
  - API key in header `x-api-key`
  - HTTP bearer

Translate and dub an already transcribed project into another language with the normal credit, voice and concurrency checks. Poll projects_status.

## Headers

- `Idempotency-Key` string, uuid

## Request body

- object
  - `projectId` string, required
  - `keepBackgroundMusic` boolean
  - `keepOriginalVoice` boolean
  - `originalVoiceVolume` number
  - `voiceMode` 'cloning' | 'custom'
  - `voiceId` string
  - `subtitles` boolean
  - `subtitlesSource` 'translated' | 'original'
  - `voiceIsolatorOption` 'studio' | 'realistic'
  - `lipSyncMode` 'standard' | 'pro' | 'studio'
  - `activeSpeakerDetectionEnabled` boolean
  - `voiceCloningSettings` object
    - `stability` number, required
    - `similarity` number, required
  - `translationTimeSkips` object[]
    - `startTime` number, required
    - `endTime` number, required
  - `targetLanguage` 'afrikaans' | 'albanian' | 'amharic' | 'arabic' | 'armenian' | 'assamese' | 'azerbaijani' | 'basque' | 'belarusian' | 'bengali' | 'bosnian' | 'bulgarian' | 'catalan' | 'croatian' | 'czech' | 'danish' | 'dutch' | 'english' | 'british english' | 'estonian' | 'finnish' | 'french' | 'french canadian' | 'galician' | 'german' | 'greek' | 'gujarati' | 'hebrew' | 'hindi' | 'hungarian' | 'icelandic' | 'indonesian' | 'irish' | 'italian' | 'japanese' | 'kannada' | 'kazakh' | 'khmer' | 'korean' | 'lao' | 'latvian' | 'lithuanian' | 'macedonian' | 'malay' | 'malayalam' | 'mandarin' | 'marathi' | 'mongolian' | 'nepali' | 'norwegian' | 'persian' | 'polish' | 'portuguese' | 'brazilian portuguese' | 'pt_brazil' | 'punjabi' | 'romanian' | 'russian' | 'serbian' | 'slovak' | 'slovenian' | 'spanish' | 'swahili' | 'swedish' | 'tagalog' | 'tamil' | 'telugu' | 'thai' | 'turkish' | 'ukrainian' | 'urdu' | 'vietnamese' | 'welsh' | 'yoruba' | 'zulu', required
  - `requestId` string, uuid: UUID v4 for this action. Reuse the same ID with identical arguments on retries.

## Response `200`

Completed result or saved request state.

- object
  - `data` unknown, required
  - `requestId` string, uuid

## Other responses

- `202`: The action is running. Poll action_request_get with requestId and operation.
- `400`: Invalid arguments.
- `401`: Invalid or expired API key.
- `403`: Permission or subscription required.
- `409`: Idempotency conflict or account concurrency limit.
- `429`: Shared account rate or monthly limit reached.

---

[API](https://skmtc.dev/voicecheap/apis/voicecheap-api.md) · [All operations](https://skmtc.dev/voicecheap/apis/voicecheap-api/llms.txt) · [OpenAPI document](https://skmtc.dev/voicecheap/apis/voicecheap-api/revisions/0cb50268f31a?raw)