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How to Use FFMPEGAPI.net to Add Subtitles to Your Videos Efficiently

June 2026 FFMPEG API Team

In today's digital landscape, adding subtitles to videos is essential for accessibility and viewer engagement. If you're a developer looking for a cloud-based solution to integrate subtitles seamlessly into your videos, FFMPEGAPI.net is your go-to choice. With its hosted REST API, you can add ASS subtitles with minimal effort, allowing you to focus on your application rather than server management.

Why Choose FFMPEGAPI.net?

FFMPEGAPI.net provides a hassle-free way to utilize FFmpeg's powerful capabilities without the complexities of managing your own server infrastructure.

With API-key authentication, you can secure your workflows and ensure reliable video processing for automation, SaaS applications, and content pipelines.

  • No server setup required.
  • Reduces maintenance time and costs.
  • Ideal for developers and AI agents.

Adding Subtitles Using the Add Subtitles Endpoint

To add subtitles to your video, you can use the Add Subtitles endpoint provided by FFMPEGAPI.net. This endpoint allows you to burn ASS subtitles into a video effortlessly.

The endpoint requires the video URL and the subtitle file URL, both of which must be accessible online.

  • Endpoint Method: POST
  • Endpoint Path: /api/add_subtitles
  • Content Type: application/json
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())
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"}'

Parameters for the Add Subtitles Endpoint

The Add Subtitles endpoint accepts the following parameters:

Make sure to provide valid URLs for both the video and subtitle files to ensure successful processing.

  • video_url (string, required): The URL of the video.
  • 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 you will receive a job_id immediately.

Incorporating subtitles into your videos is now a breeze with FFMPEGAPI.net. By leveraging the Add Subtitles endpoint, developers can enhance accessibility and improve user experience without worrying about server management. As a cloud FFmpeg alternative, FFMPEGAPI.net is designed to simplify your workflows while providing powerful video processing capabilities. Start using FFMPEGAPI.net today and transform your video content effortlessly!

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