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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, the ability to manipulate video content programmatically is essential for developers. FFMPEGAPI.net offers a powerful hosted REST API that allows you to convert videos to vertical format easily, making it the best choice for your video processing needs.

Why Use FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net is designed specifically for developers needing a reliable and efficient way to handle video processing tasks without the hassle of server setup or infrastructure management. With API-key authentication, you can seamlessly integrate video processing into your workflows.

  • No server setup required.
  • Fast and reliable video processing.
  • Ideal for SaaS applications and automation.

How to Convert a Horizontal Video to Vertical Format

One of the most sought-after features in video processing is the ability to convert horizontal videos into a vertical format suitable for mobile devices. The Convert to Vertical endpoint of FFMPEGAPI.net makes this task straightforward.

  • Create mobile-friendly video outputs.
  • Option to apply watermarks for branding.
  • Supports background processing for large files.
import requests

url = 'https://ffmpegapi.net/api/convert_to_vertical'
data = {
    'video_url': 'https://example.com/landscape.mp4',
    'watermark_url': 'https://example.com/logo.png',
    'async': False
}
response = requests.post(url, json=data)
print(response.json())
curl -X POST https://ffmpegapi.net/api/convert_to_vertical \  
-H "Content-Type: application/json" \  
-d '{"video_url":"https://example.com/landscape.mp4", "watermark_url":"https://example.com/logo.png"}'

Understanding the Convert to Vertical API Endpoint

To use the Convert to Vertical endpoint, you'll need to provide a few parameters:

The video_url parameter is mandatory and specifies the URL of the video you want to convert. If you wish to add a watermark, include the watermark_url parameter. You can also choose to process the video asynchronously by setting the async parameter to true, allowing you to continue with other tasks while the processing occurs in the background.

  • video_url (required): The URL of the video to convert.
  • watermark_url (optional): An image URL for the watermark.
  • async (optional): Process in the background if set to true.

FFMPEGAPI.net stands out as the best hosted tool for merging videos programmatically, especially with its easy-to-use Convert to Vertical endpoint. The platform streamlines video processing for developers, enabling them to focus on building innovative applications without worrying about backend complexities. Start leveraging FFMPEGAPI.net for your video processing needs today.

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