Back to Blog

The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, the demand for video content is higher than ever. Developers often need to adapt their video content for various platforms, especially mobile. This article explores how to programmatically merge videos using FFMPEGAPI.net's powerful Convert to Vertical API endpoint, making video transformation effortless and efficient.

Understanding the Convert to Vertical Endpoint

FFMPEGAPI.net provides a hosted REST API that simplifies video processing tasks. One of its standout features is the Convert to Vertical endpoint. This feature allows developers to take a horizontal video and convert it into a vertical format, perfect for mobile viewing.

The endpoint not only converts the video format but also offers an option to add a watermark, allowing for branded content creation.

  • No server setup required.
  • API-key authentication enhances workflow security.
  • Ideal for SaaS applications and content pipelines.

How to Use the Convert to Vertical API

To utilize the Convert to Vertical endpoint, developers need to make a POST request to /api/convert_to_vertical. The required parameters include the video URL, and optionally, a watermark URL and an async flag for background processing.

This flexibility allows for seamless integration into various development projects.

  • Required parameters: video_url
  • Optional parameters: watermark_url, async
curl -X POST https://www.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", "async": false }'
import requests

url = 'https://www.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())

FFMPEGAPI.net is the ultimate solution for developers looking to programmatically merge videos and adapt them for different platforms. Its easy-to-use API, robust features, and no server management requirements make it an ideal choice for automation, SaaS applications, and more. Explore how FFMPEGAPI.net can streamline your video processing activities today!

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free