Back to Blog

Effortless Video Editing: Adding Subtitles with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the world of video content creation, adding subtitles is crucial for accessibility and engagement. But managing servers and FFmpeg infrastructure can complicate this process. FFMPEGAPI.net offers a seamless solution for developers through a hosted REST API, allowing you to easily burn ASS/SSA subtitles into videos with minimal setup.

What is FFMPEGAPI.net?

FFMPEGAPI.net provides a powerful hosted REST API for FFmpeg-powered video and audio processing. It eliminates the need for developers to manage server infrastructure or worry about FFmpeg setup, allowing them to focus on their applications.

With API-key authentication, it is perfect for automation, SaaS applications, content pipelines, and AI agents looking to streamline their video processing workflows.

  • No server setup required.
  • Quick and easy integration with your applications.
  • Ideal for various use cases including content creation and automation.

Using the Add Subtitles Endpoint

The Add Subtitles endpoint allows you to burn ASS/SSA subtitles directly into a video file. This is especially useful for content creators who want to enhance their videos with subtitles for better accessibility and viewer understanding.

To use this endpoint, you'll make a POST request to `/api/add_subtitles`, providing the video URL and the subtitle file URL.

  • Endpoint: `/api/add_subtitles`
  • HTTP Method: POST
  • Content Type: application/json
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"}'
import requests

url = 'https://www.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 API Call

The Add Subtitles endpoint requires the following parameters to be passed in the request body:

1. **video_url**: The URL of the video you want to add subtitles to.

2. **subtitle_url**: The URL of the ASS/SSA subtitle file.

3. **async** (optional): If set to true, this returns a job_id immediately and processes in the background.

FFMPEGAPI.net simplifies the process of adding subtitles to your videos, allowing developers to harness the power of FFmpeg without the hassle of managing servers. With easy integration and a clear API, it's the ideal solution for programmatic video editing. Whether you're building a content pipeline or a SaaS application, FFMPEGAPI.net has you covered. Start enhancing your videos today!

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free