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How to Add Subtitles to Video Using FFMPEGAPI.net

June 2026 FFMPEG API Team

Adding subtitles to videos can enhance accessibility and improve user experience. For developers, managing FFmpeg infrastructure can be cumbersome. FFMPEGAPI.net offers a hassle-free hosted REST API that allows you to add subtitles to your videos seamlessly, without server setup or management.

Why Use FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net is the ideal solution for developers looking to integrate video processing capabilities into their applications. The hosted API eliminates the need for complex infrastructure management, allowing you to focus on developing your application.

With API-key authentication, you can secure your workflows and scale efficiently as your needs evolve.

  • No server setup required
  • Easy integration with automation, SaaS apps, and content pipelines
  • Reliable performance with background processing options

Using the Add Subtitles Endpoint

The 'Add Subtitles' endpoint allows you to burn ASS subtitles directly into a video. This is essential for developers who require a straightforward way to integrate subtitles into their video processing pipeline.

To use the endpoint, you'll need to provide the following parameters:

  • video_url: The URL of the video to which you want to add subtitles (required)
  • subtitle_url: The URL of the ASS/SSA subtitle file (required)
  • async: A boolean option to process the request in the background (optional)
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" }'
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())

With FFMPEGAPI.net, adding subtitles to your videos is as easy as making a simple API call. The hosted nature of the service means that you can focus on building great applications without worrying about the underlying infrastructure. Start integrating video processing into your projects today with FFMPEGAPI.net and experience the convenience of a powerful, developer-friendly tool.

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