Back to Blog

The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, merging videos programmatically is a crucial task for developers, content creators, and automation tools. Whether you're working on a content pipeline or developing a SaaS application, having the right tools can simplify your workflow. FFMPEGAPI.net provides a robust hosted REST API that allows you to add subtitles and merge videos without the hassle of managing complex FFmpeg infrastructure.

Why Use FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net offers a user-friendly, hosted solution for video and audio processing, allowing developers to focus on their applications rather than server setup. The API supports various functionalities, including adding subtitles, merging videos, and more.

  • No server setup or FFmpeg infrastructure management required.
  • API-key authentication for secure and straightforward integration.
  • Ideal for developers, automation, SaaS apps, content pipelines, and AI agents.

How to Add Subtitles to a Video Using the API

One of the powerful features of FFMPEGAPI.net is the ability to burn ASS/SSA subtitles into a video. This functionality is accessible through the '/api/add_subtitles' endpoint, making it easy to integrate into your applications.

  • Endpoint: `/api/add_subtitles`
  • Method: POST
  • Content-Type: application/json
curl -X POST https://ffmpegapi.net/api/add_subtitles -H 'Content-Type: application/json' -d '{"video_url":"https://example.com/video.mp4", "subtitle_url":"https://example.com/subtitles.ass", "async": true}'
import requests

url = 'https://ffmpegapi.net/api/add_subtitles'
data = {"video_url":"https://example.com/video.mp4", "subtitle_url":"https://example.com/subtitles.ass"}
response = requests.post(url, json=data)
print(response.json())

Integrating the API into Your Workflow

Integrating the FFMPEGAPI.net into your development workflow is straightforward. With API-key authentication, you can securely access the features you need without worrying about managing your own FFmpeg deployment.

  • Easily integrate into any programming language that supports HTTP requests.
  • Scale as needed, whether for personal projects or enterprise-level applications.

FFMPEGAPI.net stands out as a leading choice for developers looking to merge videos programmatically. With its hosted REST API, developers can avoid the complexities of FFmpeg management while accessing powerful video processing capabilities. Start using FFMPEGAPI.net today and streamline your video processing tasks with ease.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free