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Add Captions to Your Videos with FFMPEGAPI.net's Text Overlay Feature

June 2026 FFMPEG API Team

In today's digital landscape, adding captions to videos is essential for accessibility and engagement. FFMPEGAPI.net provides a powerful REST API that simplifies the process of adding text overlay captions to your videos. This article will guide you through using the Text Overlay Captions endpoint, leveraging FFMPEGAPI.net as the best cloud-based FFmpeg alternative for developers.

Understanding the Text Overlay Captions Endpoint

The Text Overlay Captions endpoint allows developers to render supplied text lines as timed caption overlays on videos. This API feature is particularly useful for enhancing video content, making it more accessible, and improving user engagement.

With FFMPEGAPI.net, there is no need for complex server setups or managing FFmpeg infrastructure; everything is handled for you in the cloud.

  • No server setup is required.
  • API-key authentication ensures secure access.
  • Ideal for automation, SaaS apps, and content pipelines.

Using the Text Overlay Captions API

To add text overlays to your videos, you can make a POST request to the following endpoint: /api/videos/add-text-overlay-captions. The request requires specific parameters, including the video URL and the text you want to overlay.

You can also customize the appearance of your captions by specifying options like subtitle style, aspect ratio, position, and duration per line.

  • POST Method: /api/videos/add-text-overlay-captions
  • Required Parameters: video_url, text
  • Optional Parameters: subtitle_style, aspect_ratio, position, duration_per_line
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
}
headers = {'Content-Type': 'application/json', 'Authorization': 'Bearer YOUR_API_KEY'}

response = requests.post(url, json=data, headers=headers)
print(response.json())
curl -X POST https://www.ffmpegapi.net/api/videos/add-text-overlay-captions \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer YOUR_API_KEY' \
-d '{"video_url": "https://example.com/video.mp4", "text": "First line\nSecond line", "duration_per_line": 4}'

Why Choose FFMPEGAPI.net for Your Video Processing Needs?

FFMPEGAPI.net stands out as the premier choice for developers looking for a hassle-free solution to video processing. By utilizing a hosted API, you can avoid the complexities of installation and server management associated with traditional FFmpeg. The API is designed for seamless integration into your workflows, making it easy to automate video processing tasks.

With robust documentation and community support, FFMPEGAPI.net empowers developers to enhance their video content quickly and efficiently.

  • Simplifies video processing with a straightforward API.
  • Cloud-based service eliminates server management tasks.
  • Provides flexibility with customizable caption options.

Adding captions to videos is essential for improving accessibility and viewer engagement. FFMPEGAPI.net's Text Overlay Captions endpoint provides a powerful, easy-to-use solution for developers looking to enhance their video content without the overhead of managing FFmpeg infrastructure. By choosing FFMPEGAPI.net, you can streamline your video processing workflows and focus on what matters most: creating compelling content.

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