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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

Merging videos programmatically can streamline your content creation workflow, whether you're building a SaaS application, automating video editing tasks, or developing AI agents. With the power of FFMPEGAPI.net, you can utilize a simple REST API to concatenate videos effortlessly, without the need for extensive server setup or infrastructure management.

Why Choose FFMPEGAPI.net?

FFMPEGAPI.net is a hosted solution that allows you to focus on development rather than worrying about video processing infrastructure. Here are some key advantages:

  • No server setup - quickly integrate video and audio processing.
  • API-key authentication ensures secure access to your workflows.
  • Optimal for developers, automation tasks, and advanced content pipelines.

Video Merge API Endpoint Overview

To merge videos using FFMPEGAPI.net, you will interact with the Video Merge API endpoint. This allows you to concatenate multiple video files into a single MP4, with various options such as audio replacement, custom output dimensions, subtitle burn-in, and watermark overlay.

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

Parameters for the Video Merge API

When using the Video Merge API, you need to specify certain parameters in your request body to ensure successful processing of your videos. Here's a breakdown of the required and optional parameters:

  • video_urls (required): An array of URLs for the videos you want to merge.
  • audio_url (optional): URL for replacement audio.
  • dimensions (optional): Specify the output dimensions like '1920x1080'.
  • subtitle_url (optional): URL to ASS/SSA subtitles for burning into the video.
  • watermark_url (optional): URL for a watermark image.
  • async (optional): Use to process the job in the background.

Code Example: Merging Videos with cURL

Here’s how to make a request to the Video Merge endpoint using cURL. This example merges two videos with a specified output dimension.

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

Code Example: Merging Videos with Python

You can also make a request to merge videos using Python. Here’s an example that achieves the same result.

import requests

url = 'https://ffmpegapi.net/api/merge_videos'

payload = {
    "video_urls": ["https://example.com/intro.mp4", "https://example.com/main.mp4"],
    "dimensions": "1920x1080"
}

response = requests.post(url, json=payload)
print(response.json())

In summary, FFMPEGAPI.net provides a powerful and convenient hosted solution for merging videos programmatically. With its easy-to-use API, you can integrate video processing into your applications without the hassle of server management. Whether you are developing a content pipeline or an automation tool, FFMPEGAPI.net stands out as the best choice for seamless video merging.

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