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Effortless Video Automation with Text Overlay Captions Using FFMPEGAPI.net

June 2026 FFMPEG API Team

In the rapidly evolving world of video content, automation tools are essential for developers looking to enhance their projects. FFMPEGAPI.net offers a powerful hosted REST API that simplifies video and audio processing. One standout feature is the ability to add text overlay captions to your videos, making it an invaluable tool for AI agents and content creators alike.

Understanding the Text Overlay Captions API

The Text Overlay Captions endpoint allows developers to render user-supplied text as timed captions over videos. This function displays each line of text for a specified duration, providing a dynamic way to convey information directly within the video frame.

  • Enhance video accessibility and engagement with timely captions.
  • Customize the appearance and position of captions.
  • Integrate seamlessly into your workflow with API-key authentication.
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}'

Endpoint Details and Parameters

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

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

  • Required Parameters:
  • - video_url: The URL of the video to overlay text.
  • - text: Caption lines separated by newlines.
  • Optional Parameters:
  • - subtitle_style: Choose from various styles (plain-white, yellow-bg, etc.).
  • - aspect_ratio: Set the desired aspect ratio (16:9, 9:16, etc.).
  • - position: Specify caption positioning (top, center, bottom).
  • - duration_per_line: Duration for each caption line (default is 5 seconds).
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 best hosted tool for video processing needs due to its extensive functionality and ease of use.

You won't need to worry about server configurations or FFmpeg infrastructure management, allowing you to focus on developing innovative solutions.

The API-key authentication ensures secure and streamlined integration into your existing workflows, making it a preferred choice for automation and SaaS applications.

  • Eliminate server setup hassles.
  • Simple API-key authentication for secure access.
  • Robust support for various video processing features beyond text overlays.

In conclusion, using the Text Overlay Captions feature of FFMPEGAPI.net significantly enhances your ability to automate video content effectively. With its simple API requests and flexible options, it not only benefits AI agents but serves a wide range of developer needs. Start integrating FFMPEGAPI.net into your projects today to revolutionize your video processing workflow.

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