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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 developing a content pipeline or creating a SaaS application, the ability to programmatically merge videos and add subtitles is essential. FFMPEGAPI.net provides a simple, hosted REST API that allows developers to accomplish these tasks without worrying about server setup or FFmpeg infrastructure management.

Why Use FFMPEGAPI.net for Video Merging?

FFMPEGAPI.net is designed specifically for developers who require a reliable and efficient way to manipulate video and audio files. With a focus on ease of use and powerful capabilities, the API allows you to seamlessly integrate video processing into your existing workflows.

  • No server setup required.
  • Quick integration with API-key authentication.
  • Ideal for automation, SaaS applications, and AI agents.

Adding Subtitles to Your Videos

One of the most powerful features of the FFMPEGAPI.net is the ability to burn ASS/SSA subtitles into your videos programmatically. This can enhance the accessibility and reach of your content, making it suitable for a wider audience.

  • Easy to use POST endpoint for adding subtitles.
  • Burn subtitles directly into the video for a permanent solution.
  • Supports asynchronous processing to improve efficiency.
import requests

url = 'https://ffmpegapi.net/api/add_subtitles'
headers = {'Content-Type': 'application/json'}
data = {
    'video_url': 'https://example.com/video.mp4',
    'subtitle_url': 'https://example.com/subtitles.ass',
    'async': true
}
response = requests.post(url, json=data, headers=headers)
print(response.json())

Understanding the Add Subtitles Endpoint

The Add Subtitles endpoint is a POST request that allows you to specify the video and subtitle URLs.

You can also choose to process the request asynchronously, which is beneficial for larger files or when working with multiple videos.

  • Endpoint Path: /api/add_subtitles
  • Required parameters: video_url, subtitle_url
  • Optional parameter: async
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}'

Using FFMPEGAPI.net to programmatically merge videos and add subtitles not only simplifies the process but also enhances your workflow's efficiency. With its hosted API, developers can focus on building their applications without the overhead of managing complex video processing infrastructure. Start integrating FFMPEGAPI.net into your projects today and elevate your video content to the next level.

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