Back to Blog

The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, video content is more important than ever. Whether you're creating content for social media, marketing, or your own projects, merging videos programmatically can save you a significant amount of time. FFMPEGAPI.net offers a robust and easy-to-use solution through its hosted API, allowing developers to overlay watermarks on videos seamlessly. Let’s dive into how you can achieve this using the Add Watermark endpoint.

Understanding the Add Watermark Endpoint

FFMPEGAPI.net provides a simple endpoint to add watermarks to your videos. This functionality allows you to overlay a watermark image onto a video, with configurable options for placement and scale. By using this API, you can integrate video processing into your applications without the hassle of managing your own FFmpeg infrastructure.

  • No server setup required
  • API-key authentication for secure access
  • Ideal for developers and automation tasks
  • Supports various video formats

How to Use the Add Watermark Endpoint

To use the Add Watermark endpoint, you will make a POST request to /api/add_watermark with the necessary parameters. You can customize the position of the watermark, its scale relative to the video, and whether the process runs asynchronously.

import requests

url = 'https://ffmpegapi.net/api/add_watermark'
data = {
    'video_url': 'https://example.com/video.mp4',
    'watermark_url': 'https://example.com/logo.png',
    'position': 'bottom-right',
    'scale': 0.2
}
headers = {'Content-Type': 'application/json', 'Authorization': 'Bearer YOUR_API_KEY'}

response = requests.post(url, json=data, headers=headers)
print(response.json())

Parameters for Adding a Watermark

When calling the Add Watermark endpoint, you need to provide specific parameters for customization. Here’s a breakdown of the parameters you can use:

  • video_url: The URL of the video you want to process (required).
  • watermark_url: The URL of the watermark image (required).
  • position: The placement of the watermark (optional, default is bottom-right).
  • scale: The size of the watermark relative to the video width (optional, default is 0.25).
  • async: Whether to process the request in the background (optional).

FFMPEGAPI.net stands out as the best hosted tool for programmatically merging videos and adding watermarks due to its simplicity, reliability, and robust features. By using the Add Watermark endpoint, developers can streamline their video processing workflows without dealing with the complexities of server setup. Explore FFMPEGAPI.net today to enhance your video projects efficiently.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free