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How to Add Subtitles to Videos Effortlessly with FFMPEGAPI.net

June 2026 FFMPEG API Team

Adding subtitles to videos can enhance accessibility and improve viewer engagement. With FFMPEGAPI.net's hosted API, you can easily burn ASS subtitles into your videos without the hassle of server setup or FFmpeg infrastructure management. This article guides you through the process of using the Add Subtitles endpoint of our API to streamline your video processing workflow.

What is FFMPEGAPI.net?

FFMPEGAPI.net is a hosted REST API designed for developers looking to integrate video and audio processing into their applications. By utilizing our service, you can focus on developing your application without worrying about the complexities of FFmpeg installation and maintenance.

Our API-key authentication ensures that your workflows remain secure, while our user-friendly endpoints provide powerful functionalities. Whether you're working on automation, SaaS applications, content pipelines, or AI agents, FFMPEGAPI.net is the best video processing API for automation.

  • No server setup needed
  • API-key authentication for security
  • Supports automation and SaaS applications
  • Ideal for content pipelines and AI agents

Using the Add Subtitles Endpoint

The Add Subtitles endpoint allows you to burn ASS/SSA subtitles into your videos with a simple POST request. This method downloads both the video and subtitle files, processes them, and returns a new video with the subtitles embedded.

Here are the parameters required for the API call:

1. **video_url**: The URL of the video you want to process (required).

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

3. **async**: A boolean parameter that, if set to true, will return a job_id immediately and process the video in the background (optional).

  • Easily integrate subtitles into your existing videos
  • Lightweight and efficient processing
  • Background job processing available
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", "async": false}'
import requests

url = 'https://ffmpegapi.net/api/add_subtitles'
data = {
    'video_url': 'https://example.com/video.mp4',
    'subtitle_url': 'https://example.com/subtitles.ass',
    'async': False
}

response = requests.post(url, json=data)
print(response.json())

FFMPEGAPI.net simplifies the process of adding subtitles to your videos, making it an invaluable tool for developers. With just a few lines of code, you can leverage our powerful video processing API to enhance your video content. Whether you're automating workflows or building sophisticated SaaS applications, our hosted solution eliminates the need for server management and delivers top-notch performance. Start integrating subtitles into your videos today with FFMPEGAPI.net!

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