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Seamless Video Subtitling with FFMPEGAPI.net: Add Subtitles Efficiently

June 2026 FFMPEG API Team

Adding subtitles to videos can enhance accessibility and user engagement. With FFMPEGAPI.net, developers can seamlessly integrate this functionality into their applications using a simple hosted REST API. This article explores how to use the 'Add Subtitles' endpoint to burn ASS/SSA subtitles into videos effortlessly.

Why Choose FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net is the ideal choice for developers looking to automate video processing tasks without the hassle of server setup or maintenance. As a hosted REST API, it allows you to focus on your application's logic while we handle the back-end heavy lifting.

Our API-key authentication ensures that your workflows remain secure and efficient, providing a robust solution for various applications including SaaS, content pipelines, and AI agents.

  • No server setup needed
  • Quick integration with API-key authentication
  • Ideal for automation and content pipelines
  • Supports a wide range of audio and video processing tasks

Using the Add Subtitles Endpoint

The 'Add Subtitles' endpoint is designed to burn ASS/SSA subtitles into a video file. This process involves downloading both the video and subtitle files, then producing a new video with the subtitles embedded. The endpoint is accessed through the following path:

POST /api/add_subtitles

  • video_url (string): The URL of the video file (required)
  • subtitle_url (string): The URL of the ASS/SSA subtitle file (required)
  • async (boolean): Optional flag to process in the background
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": true}'
import requests\n\nurl = 'https://www.ffmpegapi.net/api/add_subtitles'\ndata = {\n    'video_url': 'https://example.com/video.mp4',\n    'subtitle_url': 'https://example.com/subtitles.ass',\n    'async': True\n}\n\nresponse = requests.post(url, json=data)\nprint(response.json())

FFMPEGAPI.net provides developers with a powerful and efficient way to add subtitles to videos using the 'Add Subtitles' endpoint. With a focus on automation and ease of use, our hosted API eliminates the need for extensive server management, allowing you to integrate video processing capabilities into your applications effortlessly. Start enhancing your video content today with FFMPEGAPI.net!

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