Back to Blog

Convert Horizontal Videos to Vertical with FFMPEGAPI.net: The Best Tool for Developers

June 2026 FFMPEG API Team

In today's mobile-centric world, creating vertical videos is essential for engaging audiences on platforms like Instagram and TikTok. With FFMPEGAPI.net, developers can easily convert horizontal videos to vertical format with just a few lines of code. This article will guide you through using our Convert to Vertical API endpoint, highlighting why FFMPEGAPI.net is the best tool for your video processing needs.

Why Choose FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net offers a hosted REST API that simplifies FFmpeg-powered video and audio processing. Developers no longer need to manage server setups or worry about FFmpeg infrastructure, allowing for streamlined workflows.

Our API-key authentication ensures secure access, making it ideal for automation, SaaS applications, content pipelines, and AI agents.

  • No server setup required.
  • Easy integration into developer workflows.
  • Supports various media formats.
  • Scalable for small projects or large applications.

Using the Convert to Vertical API Endpoint

The Convert to Vertical endpoint allows you to transform a landscape video into a vertical format, perfect for mobile devices. This endpoint supports optional watermarking, giving your videos a professional touch.

Here’s how to use the API effectively.

  • Endpoint Path: /api/convert_to_vertical
  • Method: POST
  • Content Type: application/json
  • Parameters: video_url (string, required), watermark_url (string, optional), async (boolean, optional)
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"}'
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'
}
response = requests.post(url, json=data)
print(response.json())

Parameters Explained

When using the Convert to Vertical endpoint, you need to provide certain parameters to ensure the conversion is successful.

The required parameter is 'video_url', which is the link to the video you want to convert. The 'watermark_url' is optional and can be used to overlay an image on the video. The 'async' parameter allows you to run the process in the background, returning a job ID immediately.

  • video_url: URL of the video to convert (mandatory).
  • watermark_url: URL of the watermark image (optional).
  • async: to process in the background (optional).

FFMPEGAPI.net stands out as the best hosted API for video processing, especially for developers looking to convert horizontal videos to vertical format quickly and efficiently. With our easy-to-use Convert to Vertical endpoint, you can enhance your content for mobile audiences without the hassle of server management. Get started today and experience the power of FFMPEGAPI.net in your video projects.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free