> ## Documentation Index
> Fetch the complete documentation index at: https://www.vozo.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Create LipSync Or Talking Photos

## How it works

<Steps>
  <Step title="Host your assets at a publicly accessible URL">
    Upload your video, photo, and audio files so our servers can retrieve them.
  </Step>

  <Step title="Send an API request with the appropriate parameters">
    Reference your hosted assets and specify your desired mode (Standard or Precision).
  </Step>

  <Step title="Wait or query status">
    Use our webhook callback or poll the API with your job ID until processing is complete.
  </Step>

  <Step title="Download video output">
    Retrieve the finished talking photo or lip‑synced video from the provided URL.
  </Step>
</Steps>

## Usage Limitation:

* You may have up to 10 concurrent jobs (including queued requests).
* Only single‑face videos or photos are supported.
* Estimated queue time: 1–120 minutes, depending on system load.
* Standard Mode processing time: \~10 minutes.
* Precision Mode processing time: \~20 minutes.

<Note>
  If a video or photo contains multiple faces, only the largest detected face will be lip‑synced.
</Note>

## API Error Codes

| Code | Description                                                      |
| ---- | ---------------------------------------------------------------- |
| 5    | Invalid request parameters.                                      |
| 7    | No permission to request.                                        |
| 104  | Insufficient credits.                                            |
| 814  | Your account is not a member and is not allowed to call the API. |
| 1000 | Internal Server Error.                                           |
| 1301 | Callback Challenge failed.                                       |
| 1302 | API key has been revoked.                                        |
| 1304 | API key has reached the maximum number of concurrent requests.   |
| 1502 | Your audio driver is either invalid or cannot be downloaded.     |
| 1503 | Your account is not authorized to call the API.                  |
| 1305 | Only Studio plan is allowed.                                     |

## Job Error Codes

| Code  | Description                                              |
| ----- | -------------------------------------------------------- |
| 999   | Failed to download the file.                             |
| 20403 | Not enough faces.                                        |
| 20407 | The number of face tracks is too many.                   |
| 20408 | The image-to-video facial detection has not been passed. |
| 20601 | There are no faces in the picture.                       |
| 20602 | Unknown image format.                                    |
| 20611 | Video triggering flow limit.                             |
| 20613 | Generate video input sensitive to images.                |