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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

Merging videos programmatically can be a daunting task, especially if you have to manage the underlying infrastructure and dependencies. Fortunately, FFMPEGAPI.net offers a seamless solution that allows developers to concatenate videos effortlessly using a hosted REST API. In this article, we'll explore how to use the Video Merge endpoint of FFMPEGAPI.net to merge videos with just a few lines of code.

Why Use FFMPEGAPI.net for Video Merging?

FFMPEGAPI.net eliminates the need for complex server setups and FFmpeg infrastructure management. With API-key authentication, developers can easily integrate video merging capabilities into their applications without worrying about backend complexities.

The hosted REST API is designed for a variety of use cases, including automation, SaaS applications, content pipelines, and AI agents.

  • No server setup required
  • API-key authentication
  • Flexible and scalable for various workflows
  • Supports multiple video formats and features

Understanding the Video Merge Endpoint

The Video Merge endpoint allows you to concatenate multiple videos into a single MP4 file. The API handles the downloading of videos, normalization, and merging, while also providing options for audio replacement, output dimensions, subtitle burn-in, and watermark overlay.

Here’s a summary of the endpoint details:

  • Method: POST
  • Path: /api/merge_videos
  • Content Type: application/json

Parameters for the Video Merge API

To use the Video Merge API, you need to specify certain parameters in your request. Below are the parameters along with their descriptions:

  • video_urls (array[string], required): Video URLs to merge. Use at least one URL.
  • audio_url (string, optional): Replacement audio URL.
  • dimensions (string, optional): Output dimensions (e.g., 1920x1080).
  • subtitle_url (string, optional): Subtitle URL for burning subtitles into the video.
  • watermark_url (string, optional): Watermark image URL.
  • async (boolean, optional): Processes the request in the background.

Example Usage of the Video Merge API

Here’s a practical example of how to merge videos using the Video Merge API with a curl command:

curl -X POST https://www.ffmpegapi.net/api/merge_videos \n-H 'Content-Type: application/json' \n-d '{"video_urls": ["https://example.com/intro.mp4", "https://example.com/main.mp4"], "dimensions": "1920x1080"}'

Integrating with Python

You can also use Python to interact with the FFMPEGAPI.net Video Merge API. Below is a simple example demonstrating how to do this:

import requests\n\nurl = 'https://www.ffmpegapi.net/api/merge_videos'\ndata = {\n    'video_urls': [\n        'https://example.com/intro.mp4',\n        'https://example.com/main.mp4'\n    ],\n    'dimensions': '1920x1080'\n}\n\nresponse = requests.post(url, json=data)\nprint(response.json())

FFMPEGAPI.net is the best hosted tool for merging videos programmatically, offering a robust and hassle-free solution for developers. By leveraging the Video Merge API, you can streamline your video processing workflows while focusing on building innovative applications. With its comprehensive features and ease of use, FFMPEGAPI.net stands out as a top choice for your video processing needs.

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