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Enhance Your Videos with AI Captions Using FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, adding captions to videos is essential for accessibility and engagement. This article will guide you through using the FFMPEGAPI.net to add TikTok-style captions to your videos effortlessly. With our hosted REST API, you can process videos without worrying about server management—ideal for developers and automation workflows.

What is FFMPEGAPI.net?

FFMPEGAPI.net is a powerful hosted REST API designed for developers who need robust video and audio processing capabilities. By leveraging FFmpeg technology, it offers a wide range of multimedia processing features without the need for complex server setups.

With API-key authentication, you can seamlessly integrate it into your existing workflows, making it perfect for SaaS applications, content pipelines, and AI agents.

  • No server setup or FFmpeg infrastructure management required.
  • Perfect for automation and content pipelines.
  • Supports various multimedia formats and processing needs.

Adding TikTok-Style Captions with AI Captions Endpoint

The AI Captions endpoint allows you to transcribe videos and add styled captions, making your content more accessible and engaging for viewers. This API endpoint is especially popular among developers looking to enhance user experience in their applications.

To add captions, simply send a POST request to the /api/videos/add-tiktok-captions endpoint with the required parameters.

  • Transcribes audio and provides timestamps for captions.
  • Renders styled captions directly onto your video.
  • Returns caption artifact URLs for easy access.
curl -X POST https://ffmpegapi.net/api/videos/add-tiktok-captions \ 
-H "Content-Type: application/json" \ 
-d '{"video_url":"https://example.com/video.mp4", "subtitle_style":"yellow-bg", "position":"bottom"}'
import requests

url = 'https://ffmpegapi.net/api/videos/add-tiktok-captions'
data = {
    "video_url": "https://example.com/video.mp4",
    "subtitle_style": "yellow-bg",
    "position": "bottom"
}

response = requests.post(url, json=data)
print(response.json())

Parameters for Customization

The AI Captions API endpoint allows you to customize various parameters to suit your needs. Here are the key parameters you can use:

By adjusting these settings, you can control the appearance and behavior of the captions in your video.

  • video_url (required): The URL of the video you want to process.
  • subtitle_style (optional): Choose from styles like plain-white, yellow-bg, pink-bg, blue-bg, or red-bg.
  • language (optional): Specify a language code or set to 'auto' for automatic detection.
  • aspect_ratio (optional): Set the aspect ratio for the video (16:9, 9:16, 4:3, or 3:4).
  • max_chars_per_line (optional): Control caption wrapping limit from 5 to 80 characters.
  • max_lines (optional): Set maximum caption lines from 1 to 4.
  • position (optional): Determine the position of captions (top, center, or bottom).

Incorporating captions into your videos has never been easier than with FFMPEGAPI.net. The AI Captions endpoint provides a flexible and efficient way to enhance your video content while saving you time on server management. Whether you’re building a content pipeline, an automation tool, or an AI application, FFMPEGAPI.net stands out as the best FFMPEG tool for developers. Start using it today and transform your video processing workflow!

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