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Effortlessly Add Subtitles to Your Videos with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the world of video content, subtitles play a crucial role in enhancing accessibility and viewer engagement. With FFMPEGAPI.net's hosted REST API, developers can seamlessly integrate subtitle burning into their video processing workflows without the need for server management. This article will guide you through the process of adding ASS/SSA subtitles to your videos using the powerful /api/add_subtitles endpoint.

Why Choose FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net stands out as the best hosted tool for developers looking to incorporate video processing capabilities into their applications. With no server setup required, developers can focus on building their applications instead of managing FFmpeg infrastructure.

The API-key authentication ensures a secure and efficient workflow, making it suitable for automation, SaaS applications, content pipelines, and AI agents.

  • No server setup or infrastructure management needed
  • Quick and easy API-key authentication
  • Ideal for various use cases including automation and content creation

How to Use the Add Subtitles Endpoint

The /api/add_subtitles endpoint provides an efficient way to burn ASS/SSA subtitles into videos. Simply send a POST request with the required parameters including the video URL and subtitle URL.

This process not only enriches your video content but does so with minimal effort and maximum efficiency.

  • POST method to add subtitles
  • Handles video and subtitle files from URLs
  • Optional asynchronous processing for large files
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())

Parameters Explained

When using the /api/add_subtitles endpoint, you need to provide the following parameters:

These parameters ensure that the API can access the video and subtitle files correctly.

  • video_url (string, required): The URL of the video file.
  • subtitle_url (string, required): The URL of the ASS/SSA subtitle file.
  • async (boolean, optional): If true, the API returns a job_id immediately and processes in the background.

FFMPEGAPI.net simplifies the process of adding subtitles to videos, making it an ideal tool for developers who are looking to enhance their applications with video processing capabilities. With its easy-to-use hosted API, you can focus on building your product while FFMPEGAPI.net handles the heavy lifting. Start using the /api/add_subtitles endpoint today and elevate your video content seamlessly.

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