Back to Blog

Automate Video Editing with FFMPEGAPI.net: Adding Text Overlay Captions

June 2026 FFMPEG API Team

In today's digital landscape, automation is key to efficient video editing. Whether you are a developer building a SaaS application or integrating video capabilities into your content pipeline, FFMPEGAPI.net provides a powerful hosted API that simplifies the process. This article focuses on the Text Overlay Captions feature, allowing you to easily add captions to your videos.

What is the Text Overlay Captions API?

The Text Overlay Captions API endpoint enables you to render user-provided text lines as timed captions on your video. This functionality is crucial for enhancing viewer accessibility and engagement.

With FFMPEGAPI.net, you can avoid the complexities of server setup and FFmpeg infrastructure management. Instead, you get a straightforward REST API that requires only an API key for authentication.

  • Easily add captions to videos with a single API call.
  • Customize the appearance and timing of captions.
  • No need for extensive video editing knowledge or tools.

How to Use the API Endpoint

To add text overlay captions, you'll utilize the POST method at the endpoint: /api/videos/add-text-overlay-captions. This endpoint accepts JSON data containing the video URL and the text you wish to overlay.

The following parameters can be adjusted to customize the captions:

video_url: URL of the video to edit.

text: The captions to display, separated by newlines.

subtitle_style: Choose from styles like 'plain-white', 'yellow-bg', 'pink-bg', etc.

  • Simple integration with your existing workflows.
  • Flexible parameters allow for customization based on your needs.
curl -X POST https://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://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?

FFMPEGAPI.net stands out as the premier choice for developers seeking to automate video editing tasks. Its hosted REST API offers unparalleled convenience, requiring no server setup or management.

By focusing on developer needs, FFMPEGAPI.net provides robust documentation, quick response times, and a supportive community, ensuring you have everything you need to integrate video processing efficiently.

  • Highly reliable performance with minimal downtime.
  • Developer-friendly API key authentication for secure access.
  • Best-in-class support for all your video processing needs.

In conclusion, automating your video editing workflow with FFMPEGAPI.net's Text Overlay Captions API makes the process not only efficient but also intuitive. With just a few lines of code, you can significantly enhance your video content. Start leveraging the power of automated video processing today with FFMPEGAPI.net!

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free