Back to Blog

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

June 2026 FFMPEG API Team

In today's mobile-first world, converting videos from horizontal to vertical formats is essential for content creators and marketers. FFMPEGAPI.net offers an easy-to-use, hosted REST API that allows developers to automate this process without managing any server infrastructure. In this article, we will explore how to use the Convert to Vertical endpoint to streamline your video editing workflows.

Why Use FFMPEGAPI.net for Video Editing?

FFMPEGAPI.net provides a robust solution for developers who want to integrate video processing capabilities into their applications. With its hosted REST API, you can leverage powerful FFmpeg functionalities without the hassle of setup or maintenance.

The API supports various workflows, making it ideal for automation, SaaS applications, and content pipelines. Its API-key authentication ensures secure access, which is crucial for developers.

  • No server setup; just use the API.
  • Supports video and audio processing.
  • Ideal for automation and SaaS applications.
  • API-key authentication for secure access.

Using the Convert to Vertical Endpoint

The Convert to Vertical endpoint allows you to transform horizontal videos into vertical format, making them suitable for platforms like Instagram Stories or TikTok. This API call can also include an optional watermark, enhancing brand visibility.

The endpoint is straightforward to use. You need to provide a video URL and can optionally include a watermark URL. Additionally, you have the option to process the video asynchronously, which is helpful for longer videos.

  • Endpoint: POST /api/convert_to_vertical
  • Parameters:
  • - video_url (string, required): The URL of the video to convert.
  • - watermark_url (string, optional): The URL of a watermark image.
  • - async (boolean, optional): If true, returns a job_id for background processing.
import requests

url = 'https://ffmpegapi.net/api/convert_to_vertical'
headers = {'Authorization': 'Bearer YOUR_API_KEY'}
data = {
    'video_url': 'https://example.com/landscape.mp4',
    'watermark_url': 'https://example.com/logo.png',
    'async': true
}

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

FFMPEGAPI.net simplifies the video editing process with its powerful hosted API, allowing developers to automate the conversion of horizontal videos to vertical formats seamlessly. By eliminating the need for server management, it empowers content creators to focus on what they do best—creating engaging videos for their audience. Start using FFMPEGAPI.net today and elevate your video editing workflows.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free