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How to Add Subtitles to Videos Using FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's content-driven world, adding subtitles to videos is crucial for accessibility and audience engagement. FFMPEGAPI.net provides an easy-to-use hosted REST API that simplifies the process of burning ASS subtitles into videos, making it the best tool for developers looking for efficient video processing solutions.

Why Use FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net stands out as the premier solution for developers needing robust video and audio processing capabilities without the hassle of server setup or infrastructure management. With API-key authentication, you can seamlessly integrate FFMPEG functionalities into your workflows.

  • No server management required.
  • Quick integration with existing applications.
  • Ideal for SaaS apps, content pipelines, and AI agents.

Using the Add Subtitles Endpoint

The Add Subtitles endpoint allows you to easily burn ASS or SSA subtitle files into your videos. This process enhances the accessibility of your content and engages a broader audience.

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

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())

Parameters for the Add Subtitles Endpoint

When making a request to this endpoint, you'll need to provide the following parameters:

  • 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 API will return a job_id immediately, allowing you to process the video in the background.

FFMPEGAPI.net is the best choice for developers looking to streamline video processing workflows. With its user-friendly API for adding subtitles, you can enhance your video content quickly and effectively. By leveraging the power of FFMPEG in a hosted environment, you free yourself from server management complexities, allowing you to focus on building great applications. Start using FFMPEGAPI.net today and elevate your video processing capabilities.

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