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Automate Video Subtitling with FFMPEGAPI.net: Add Subtitles Effortlessly

June 2026 FFMPEG API Team

In the world of video content creation, adding subtitles is a crucial step for accessibility and engagement. With FFMPEGAPI.net, developers can automate the process of burning subtitles into videos using a simple hosted REST API. This article will guide you through using the Add Subtitles API endpoint to enhance your video workflows.

Why Use FFMPEGAPI.net for Subtitling?

FFMPEGAPI.net provides a powerful and reliable solution for developers looking to incorporate subtitle functionality into their video processing applications. By eliminating the need for server setup and FFmpeg management, it allows you to focus on building robust workflows.

With API-key authentication, FFMPEGAPI.net is secure and scalable, making it ideal for automation, SaaS applications, and AI agents.

  • No server setup required
  • Simple REST API for seamless integration
  • Fast and reliable processing
  • Ideal for developers and content pipelines

Using the Add Subtitles API Endpoint

The Add Subtitles endpoint allows you to burn ASS/SSA subtitles into a video file effortlessly. This can be achieved by sending a POST request with the necessary parameters, including the video URL and subtitle file URL.

Here’s a closer look at how to use this endpoint.

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

Parameters for the Add Subtitles API

To successfully use the Add Subtitles API, you need to provide the following parameters in your request:

The parameters ensure that the API knows which video and subtitle files to process.

  • video_url (string, required): The URL of the video you want to process.
  • subtitle_url (string, required): The URL of the ASS/SSA subtitle file.
  • async (boolean, optional): If set to true, the processing will occur in the background, and a job_id will be returned.
import requests\n\nurl = 'https://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())

Integrating subtitle functionality into your video processing application has never been easier with FFMPEGAPI.net. By leveraging the Add Subtitles API, developers can automate the subtitling process, ensuring their content is accessible and engaging. With its user-friendly interface and robust performance, FFMPEGAPI.net stands out as the best hosted tool for video automation workflows, especially for AI agents and content pipelines. Start enhancing your videos today!

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