Personal Business

Overview

Introduction

The NoLang API exposes the NoLang engine itself as an API: it analyzes a wide range of inputs such as text, audio, and PDFs and automatically generates videos with avatars and AI voices, producing a video in as little as a few dozen seconds.

With this API, you can integrate video generation into your existing applications and workflows with just a few lines of API calls.

* This is the API documentation for Business plan users. If you are on a Personal plan, see the "Personal" tab at the top of the header.

Service overview

Main use cases

  • Automatic generation of educational content Generate educational videos in bulk from text and documents
  • News and information delivery Automatically generate video content from articles and reports
  • Turning presentations into videos Turn PDF slides into engaging videos
  • Turning audio content into video Add visuals to podcasts and lecture audio
  • Producing marketing videos at scale Produce product explainers and ad videos efficiently

Supported video generation modes

1. Create from a question or instruction Generate a video from text

  • Simple explainer videos — generates an explanatory video that follows your instructions
  • Script-style video — the text you enter is read aloud as is

2. Generate from documents Generate videos from PDF and PowerPoint documents

  • Presentation format — generates a video that presents the document you provide
  • Summary format — generates an explainer video that summarizes the document you provide
  • Analysis format — generates a video that analyzes your document, based on the document and your instructions

3. Generate from audio Generate a video from an audio file

  • Video with subtitles for audio — generates a video that adds subtitles and an avatar to the audio file you provide

4. Generate from video Generate a video from a video file

  • Add subtitles to a video you provide — extracts the audio from the video file and generates a video with subtitles and an avatar

Important notes

Requirements

To use the NoLang API, you must meet the following requirements.

  • Plan requirements A subscription to the Standard Plan or higher is required (the Free Plan is not eligible)
  • Top-up charges Top up before use (pay-as-you-go, prepaid)

Quick start

Create an account and issue an API key

Go to NoLang and create an account.

  1. Click "NoLang API" in the sidebar
  2. Open “API Key Management” and click “New API Key”
  3. Store your API key securely (it is shown only once)
The “New API Key” button on the API key management screen

(For administrators) Create an account and issue an API key

Go to NoLang for Business and create an account.

  1. Click "NoLang API" in the sidebar
  2. Open “API Key Management” and click “New API Key”
  3. Store your API key securely (it is shown only once)
  4. Share the issued API key with your in-house developers
The “New API Key” button on the API key management screen

Credit charge

  1. Click "Credit charge" in the sidebar
  2. Click the add button on the Credit charge screen and top up the amount you want

* Requires a Standard Plan or higher subscription.

(For administrators) Credit charge

  1. Click "Credit charge" in the sidebar
  2. Click the add button on the Credit charge screen and top up the amount you want

Create a video setting

Before you use the API, you need to create a video setting in NoLang.

  1. Go to the "Saved settings" section from the sidebar
  2. Select an existing setting or click "Create a new setting"
  3. Enter your video settings
  4. Copy the video setting ID using the Copy ID for API button to the right of the setting name
The Copy ID for API button for a saved setting

Minimal request example (cURL)

Terminal window
# Generate a video from text
curl -X POST https://api.no-lang.com/v1/videos/generate/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "video_setting_id=YOUR_VIDEO_SETTING_ID" \
  -F "text=Hello, this is a test of the NoLang API."


# Check generation status
curl https://api.no-lang.com/v1/videos/YOUR_VIDEO_ID/ \
  -H "Authorization: Bearer YOUR_API_KEY"

Check the generated video in the web app

To watch, edit, or download videos generated through the API, open “NoLang API” → “Usage log” in the NoLang web app. Click “Watch & Download” in the list to access these options.

The Watch & Download button for opening a video from the usage log

Example usage log. The date and fee shown in the image are illustrative.

Overview