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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today’s digital age, video content is paramount. Whether you're developing a new SaaS application or automating content pipelines, merging videos effectively is essential. With FFMPEGAPI.net, you can leverage our hosted REST API to merge videos and add features like text overlay captions without the need for complex server setups or FFmpeg infrastructure management. This article explores how to programmatically merge videos using our Text Overlay Captions endpoint.

What is FFMPEGAPI.net?

FFMPEGAPI.net is a hosted REST API designed for seamless video and audio processing using FFmpeg. It allows developers to focus on building applications without worrying about the underlying infrastructure.

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

The Text Overlay Captions Endpoint

One of the standout features of FFMPEGAPI.net is the ability to add text overlay captions to your videos. This is accomplished using the Text Overlay Captions endpoint, which enables you to render supplied text lines as timed caption overlays directly on your videos.

  • Endpoint Path: /api/videos/add-text-overlay-captions
  • HTTP Method: POST
  • Content Type: application/json
import requests

url = 'https://api.ffmpegapi.net/api/videos/add-text-overlay-captions'
headers = {'Authorization': 'Bearer YOUR_API_KEY', 'Content-Type': 'application/json'}
data = {
    'video_url': 'https://example.com/video.mp4',
    'text': 'First line\nSecond line',
    'duration_per_line': 4
}

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

Parameters for the Text Overlay Captions Endpoint

To effectively use the Text Overlay Captions endpoint, familiarize yourself with its parameters. Here are the key parameters you can customize:

  • video_url (string, required): The URL of the video you wish to edit.
  • text (string, required): Caption lines separated by newlines.
  • subtitle_style (string, optional): Choose a style like plain-white or yellow-bg.
  • aspect_ratio (string, optional): Set to formats like 16:9 or 9:16.
  • position (string, optional): Specify where to display the captions: top, center, or bottom.
  • duration_per_line (integer, optional): Set duration for each text line, from 1 to 30 seconds.

Why Choose FFMPEGAPI.net?

FFMPEGAPI.net stands out as the best hosted tool for video processing due to its simplicity and robust functionality. Developers can integrate video processing capabilities into their applications without the hassle of managing FFmpeg servers or dealing with complex installations.

By using our API, you can easily add text overlays and manage video content programmatically, saving time and resources.

  • Ease of use: Quick setup and integration.
  • Scalability: Handle numerous requests effortlessly.
  • Support: Comprehensive documentation and responsive support team.

In conclusion, if you're looking for the best way to merge videos programmatically and enhance your content with features like text overlay captions, FFMPEGAPI.net is your go-to solution. With our hosted REST API, you can streamline your video processing workflows efficiently. Start integrating today and elevate your application's capabilities.

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