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Automate Video Caption Overlays with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the fast-paced world of video content creation, adding timely captions can enhance viewer engagement and accessibility. With FFMPEGAPI.net, you can automate the process of adding text overlays to your videos. This article will guide you through using our 'Text Overlay Captions' endpoint, perfect for developers looking to streamline their video processing workflows.

What is the Text Overlay Captions Endpoint?

The Text Overlay Captions endpoint allows you to render user-supplied text lines as timed caption overlays on your videos. This is particularly useful for content creators, marketers, and automation tools that require dynamic captioning.

By using this feature, you can display captions at specified intervals, ensuring that your audience captures the essential points of your video.

  • Supports multiple styles of text overlay.
  • Customizable aspect ratios for different platforms.
  • Adjustable duration for how long each line appears.

How to Use the Text Overlay Captions Endpoint

To use the Text Overlay Captions feature, you can send a POST request to the following endpoint:

POST /api/videos/add-text-overlay-captions

  • Requires a video URL and the text for captions.
  • Optional parameters include subtitle style, aspect ratio, position, and duration per line.
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 for Video Processing?

FFMPEGAPI.net stands out as the best hosted tool for video automation, particularly for AI agents and SaaS applications. Our service eliminates the need for server setup or FFmpeg infrastructure management, allowing developers to focus on building their applications.

With API-key authentication, we ensure a secure and streamlined workflow for your video processing needs.

  • Easy integration with existing workflows.
  • No need to manage complex server setups.
  • Scalable solution for growing automation needs.

Incorporating captions into your videos has never been easier with FFMPEGAPI.net. Our Text Overlay Captions endpoint not only simplifies the process but also maximizes accessibility and engagement. Whether you're a developer automating video workflows or a content creator enhancing your videos, FFMPEGAPI.net is your go-to solution for all video processing needs.

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