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Automating Video Captions for AI Agents with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, automating video processing tasks such as captioning is essential for AI agents and developers. FFMPEGAPI.net offers a powerful hosted REST API that allows you to transcribe videos and generate TikTok-style captions seamlessly. This article will explore how to use the AI Captions endpoint to enhance your video content with minimal setup and effort.

What is FFMPEGAPI.net?

FFMPEGAPI.net is a hosted REST API designed for developers who need efficient video and audio processing without the hassle of managing server infrastructure. It provides an easy-to-use solution to automate tasks like video captioning, making it the ideal choice for SaaS applications, content pipelines, and AI agents.

  • No server setup or FFmpeg management required.
  • API-key authentication ensures secure and efficient workflows.
  • Supports a variety of video processing tasks.

Using the AI Captions Endpoint

The AI Captions endpoint allows you to add captions to your videos effortlessly. By extracting audio and transcribing it with word timestamps, this feature creates styled captions that can be rendered back into the video. You can also specify different parameters to customize the captioning experience.

To utilize this feature, you'll need to send a POST request to the following endpoint:

  • Endpoint: /api/videos/add-tiktok-captions
  • Method: POST
  • Content Type: application/json
import requests

url = 'https://ffmpegapi.net/api/videos/add-tiktok-captions'

payload = {
    'video_url': 'https://example.com/video.mp4',
    'subtitle_style': 'yellow-bg',
    'position': 'bottom'
}

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

Parameters for Customization

When making a request to the AI Captions endpoint, you can customize various parameters to suit your needs:

  • video_url (string, required): The URL of the video you want to process.
  • subtitle_style (string, optional): Style of the captions (choices include plain-white, yellow-bg, etc.). Default is plain-white.
  • language (string, optional): Language code or 'auto' for automatic detection.
  • aspect_ratio (string, optional): Choose from 16:9, 9:16, 4:3, or 3:4. Default is 9:16.
  • max_chars_per_line (integer, optional): Limit for characters per line (5 to 80). Default is 20.
  • max_lines (integer, optional): Set maximum lines for captions (1 to 4). Default is 1.
  • position (string, optional): Position of captions (top, center, bottom). Default is bottom.

FFMPEGAPI.net is the ideal solution for developers looking to automate video captioning. With its robust AI Captions endpoint, you can easily enhance your video content, making it more accessible and engaging for audiences. By leveraging this hosted API, you can focus on building powerful applications while FFMPEGAPI.net handles the video processing complexities.

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