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Streamline Your Video Editing: Convert Horizontal to Vertical with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the era of mobile content consumption, converting horizontal videos to vertical format has become essential. FFMPEGAPI.net offers a hosted REST API that allows developers to perform this conversion seamlessly. With no server setup required, you can focus on building your applications while we handle all the heavy lifting of video processing.

Why Choose FFMPEGAPI.net for Video Conversion?

FFMPEGAPI.net is designed for developers who need a simple yet powerful tool for video and audio processing. With our API, you can implement programmatic video editing without the hassle of managing servers or FFmpeg infrastructure.

Our API-key authentication ensures that your workflows remain secure while providing you the flexibility to integrate video processing capabilities into your applications.

  • No server management required.
  • Quick integration with any application.
  • Scalable solution for automation and SaaS.
  • Ideal for content pipelines and AI agents.

Converting Horizontal Videos to Vertical Format

One of the most common video editing tasks is converting horizontal videos to vertical formats to cater to mobile devices. With FFMPEGAPI.net, this can be achieved easily through our dedicated endpoint: `/api/convert_to_vertical`.

This endpoint allows you to create a vertical output from a horizontal video and even apply an optional watermark.

  • POST method for requests.
  • Accepts video URL as a required parameter.
  • Optionally include a watermark image.
  • Supports asynchronous processing.
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", "async": false}'
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())

Understanding the API Parameters

When using the `/api/convert_to_vertical` endpoint, you need to provide the following parameters:

The `video_url` is mandatory, linking to the video you want to convert. You can also include a `watermark_url` if you wish to overlay a logo or branding on the final output. The `async` parameter lets you decide whether you want immediate response or to process the video in the background.

  • video_url: (string) Required - URL of the video to convert.
  • watermark_url: (string) Optional - URL of the watermark image.
  • async: (boolean) Optional - Process in background and return job ID.

FFMPEGAPI.net provides a robust solution for developers looking to perform video conversions effortlessly. By utilizing our `/api/convert_to_vertical` endpoint, you can ensure your videos are mobile-friendly and visually appealing without the complexity of server management. Explore the power of hosted video processing today at https://ffmpegapi.net and take your applications to the next level.

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