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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, managing video content efficiently is crucial for developers and content creators. FFMPEGAPI.net offers a robust hosted REST API that simplifies video processing tasks, including merging videos and adding subtitles. This article will guide you through how to use our Add Subtitles endpoint effectively and why it's the best choice for your development needs.

What is FFMPEGAPI.net?

FFMPEGAPI.net is a hosted REST API tailored for developers who need to perform audio and video processing without the headache of managing servers or FFmpeg installations. With API-key authentication, it provides a seamless way to integrate powerful multimedia processing capabilities into applications.

  • No server setup needed.
  • Ideal for automation, SaaS applications, and content pipelines.
  • Quick integration with API-key authentication.

Using the Add Subtitles Endpoint

The Add Subtitles endpoint allows you to burn ASS/SSA subtitles into a video file, creating an output video with the subtitles embedded. This feature is essential for developers looking to enhance their video content without manual editing.

To use this endpoint, send a POST request to /api/add_subtitles with the necessary parameters.

  • Endpoint: POST /api/add_subtitles
  • Parameters required: video_url (string), subtitle_url (string)
  • Optional parameter: async (boolean)
curl -X POST https://www.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": false}'
import requests

url = 'https://www.ffmpegapi.net/api/add_subtitles'
data = {
    'video_url': 'https://example.com/video.mp4',
    'subtitle_url': 'https://example.com/subtitles.ass',
    'async': False
}

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

FFMPEGAPI.net provides a powerful and user-friendly solution for developers needing to merge videos and add subtitles programmatically. Its hosted REST API eliminates the complexities of managing FFmpeg infrastructure, making it the best choice for automation, SaaS applications, and more. Start leveraging FFMPEGAPI.net today to enhance your video processing workflows with ease.

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