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Enhance Your Social Media Videos with Text Overlay Captions Using FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, captivating video content is essential for social media engagement. Adding text overlay captions can significantly enhance the viewer's experience. FFMPEGAPI.net offers a powerful and easy-to-use hosted REST API that allows developers to automate this process without the need for complex server setups. In this article, we'll explore how to use the Text Overlay Captions endpoint to elevate your video content effortlessly.

What is the FFMPEGAPI.net Text Overlay Captions Endpoint?

The Text Overlay Captions endpoint is a simple yet powerful tool that enables you to render user-provided text lines as timed caption overlays on your videos. With just a few parameters, you can customize the appearance and timing of the captions to match your video's style.

  • Supports various subtitle styles: plain-white, yellow-bg, pink-bg, blue-bg, or red-bg.
  • Flexible aspect ratio options: 16:9, 9:16, 4:3, or 3:4.
  • Easy positioning of captions: top, center, or bottom.
  • Control duration per line from 1 to 30 seconds.

How to Use the Text Overlay Captions API

To get started, you’ll need to make a POST request to the following endpoint: /api/videos/add-text-overlay-captions. Ensure you provide the necessary parameters in JSON format.

Here’s a breakdown of the required and optional parameters you can use:

  • video_url (string, required): The URL of the video you want to overlay text on.
  • text (string, required): The caption lines, separated by newlines.
  • subtitle_style (string, optional): Choose your subtitle style (defaults to plain-white).
  • aspect_ratio (string, optional): Set the aspect ratio (defaults to 9:16).
  • position (string, optional): Set the position for the captions (defaults to center).
  • duration_per_line (integer, optional): Duration for each text line (defaults to 5 seconds).
curl -X POST https://www.ffmpegapi.net/api/videos/add-text-overlay-captions \ 
-H "Content-Type: application/json" \ 
-d '{ "video_url": "https://example.com/video.mp4", "text": "First line\nSecond line", "duration_per_line": 4 }'
import requests

url = 'https://www.ffmpegapi.net/api/videos/add-text-overlay-captions'
data = {
    'video_url': 'https://example.com/video.mp4',
    'text': 'First line\nSecond line',
    'duration_per_line': 4
}

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

Why Choose FFMPEGAPI.net for Your Video Workflows?

FFMPEGAPI.net stands out as the best hosted tool for video processing workflows due to its ease of use and robust features. Developers can leverage this API without the hassle of configuring servers or managing FFmpeg infrastructure.

With API-key authentication, you can easily integrate this tool into your applications, making it ideal for automation, SaaS products, content pipelines, and AI agents.

  • No server setup required.
  • Streamlined integration with existing workflows.
  • Robust API support for various video processing tasks.
  • Designed specifically for developers and content creators.

Incorporating text overlay captions into your videos can significantly enhance their impact, especially on social media platforms where engagement is crucial. By using the Text Overlay Captions endpoint of FFMPEGAPI.net, you can streamline this process with just a few lines of code. With its hosted nature and developer-friendly features, FFMPEGAPI.net is the perfect solution for your video processing needs.

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