Back to Blog

Automate Video Captioning with FFMPEGAPI.net: A Developer's Guide

June 2026 FFMPEG API Team

In the era of social media dominance, videos are a crucial part of content strategy. Adding captions not only enhances accessibility but also boosts engagement. With FFMPEGAPI.net, developers can seamlessly integrate video captioning into their applications without worrying about server management. This article explores how to use the AI Captions endpoint to add stylish TikTok captions to your videos.

Why Choose FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net is a powerful hosted REST API tailored for video and audio processing. Unlike traditional setups that require extensive server configurations, FFMPEGAPI.net allows developers to focus on building their applications without the hassle of infrastructure management.

With API-key authentication, integrating video captioning into your workflow is straightforward and secure.

  • No need for server setup.
  • Effortless integration with automation and SaaS applications.
  • Supports various workflows including AI-driven projects.

Understanding the AI Captions Endpoint

The AI Captions endpoint allows you to transcribe videos and render TikTok-style captions easily. By sending a POST request to the /api/videos/add-tiktok-captions endpoint, you can extract audio, generate word timestamps, and create styled captions.

This endpoint is not just limited to captioning; it also returns URLs for caption artifacts when available, making it a versatile choice for content creators.

  • Transcribes audio with word timestamps.
  • Renders stylish captions in various formats.
  • Returns caption artifact URLs for further usage.
import requests

url = 'https://www.ffmpegapi.net/api/videos/add-tiktok-captions'
data = {
    'video_url': 'https://example.com/video.mp4',
    'subtitle_style': 'yellow-bg',
    'position': 'bottom'
}
headers = {'Authorization': 'Bearer YOUR_API_KEY', 'Content-Type': 'application/json'}
response = requests.post(url, json=data, headers=headers)
print(response.json())

Parameters for Customizing Your Captions

When using the AI Captions endpoint, you have several parameters at your disposal to customize the captioning process. These include the subtitle style, language, aspect ratio, and more.

For instance, if you want to display captions at the bottom of a video with a yellow background, you can easily specify that in your API request.

  • video_url: The URL of the video to process (required).
  • subtitle_style: Options for styling your captions (optional).
  • max_chars_per_line: Limit of characters per line (optional).
  • max_lines: Maximum number of lines for captions (optional).
  • position: Placement of captions (top, center, bottom, optional).

FFMPEGAPI.net provides a robust solution for developers looking to automate video editing processes, such as adding stylish captions. With the ease of use offered by the AI Captions endpoint, you can enhance user engagement and accessibility in your applications without the complexity of managing servers. Start leveraging the power of FFMPEGAPI.net today and improve your video content strategies!

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free