Back to Blog

Effortless Video Editing: Convert Horizontal Videos to Vertical with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the ever-evolving world of digital media, the need to adapt video content to different formats is essential. With the rise of mobile viewing, converting horizontal videos to vertical format has become a necessity. This blog will guide you through the process of using FFMPEGAPI.net's hosted REST API to automate this conversion seamlessly, without the hassle of managing servers.

Why Choose FFMPEGAPI.net for Video Conversion?

FFMPEGAPI.net offers a powerful hosted REST API specifically designed for video and audio processing. By leveraging this technology, developers can focus on building their applications without the burden of server setup or FFmpeg management.

  • No server management needed.
  • API-key authentication simplifies developer workflows.
  • Ideal for automation, SaaS applications, content pipelines, and AI integrations.

Understanding the Convert to Vertical Endpoint

The '/api/convert_to_vertical' endpoint is designed to help you convert a horizontal video into a vertical format that is perfect for mobile devices. This API can also add a watermark to your video if desired, enhancing branding opportunities.

  • Method: POST
  • Content-Type: application/json
  • Parameters: video_url (required), watermark_url (optional), async (optional)

How to Use the API: Parameters Explained

To effectively use the Convert to Vertical endpoint, you need to know the parameters that it accepts:

1. **video_url**: The URL of the video you want to convert (required).

2. **watermark_url**: An optional URL for a watermark image to overlay on the video.

3. **async**: A boolean option that allows you to return a job ID immediately while processing occurs in the background.

Practical Example of the API in Action

To illustrate how to call the Convert to Vertical API, you can use the following cURL command. Replace the example URLs with your actual video and watermark URLs to execute the request.

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}'

FFMPEGAPI.net is the ultimate solution for developers looking to simplify video processing tasks. With our hosted REST API for converting horizontal videos to vertical format, you can save time and resources while producing high-quality mobile-ready content. Start your journey with FFMPEGAPI.net today and transform the way you handle video editing.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free