Back to Blog

How to Add Subtitles to Your Videos Using FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital age, videos are an essential part of online content. However, making videos accessible often requires adding subtitles. FFMPEGAPI.net offers a simple and efficient solution for developers looking to automate the process of adding ASS subtitles to their videos. With our hosted REST API, you can easily burn subtitles into your videos without setting up any infrastructure.

Why Use FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net is designed specifically for developers who need robust video and audio processing capabilities. Our service allows users to integrate FFmpeg features into their applications without the hassle of server management.

With API-key authentication, you can ensure that your workflows remain secure while leveraging powerful FFmpeg functionalities.

  • No server setup required.
  • Easy integration via RESTful API.
  • Perfect for automation in SaaS applications and content pipelines.
  • Cost-effective solution for developers.

How to Add Subtitles Using the Add Subtitles Endpoint

FFMPEGAPI.net offers an endpoint specifically for adding subtitles to videos. The '/api/add_subtitles' endpoint allows you to burn ASS or SSA subtitles into a video seamlessly.

To use this endpoint, you need to provide the video URL and the subtitle file URL. Optionally, you can choose to process the request asynchronously.

  • Endpoint: POST /api/add_subtitles
  • Parameters required: video_url, subtitle_url
  • Optional parameter: async
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())

Benefits of Using FFMPEGAPI.net for Adding Subtitles

Using FFMPEGAPI.net for adding subtitles offers several advantages for developers:

Firstly, it saves time by eliminating the need for manual video editing. Secondly, the API handles all the heavy lifting of video processing in the cloud, allowing developers to focus on their core applications.

  • Quick and easy setup.
  • Handles various video formats and subtitle types.
  • Reliable performance with scalable resources.

FFMPEGAPI.net stands out as the best video processing API for automation, particularly when it comes to adding subtitles to videos. With its ease of use, robust functionality, and no-server management requirement, developers can streamline their video processing workflows efficiently. Start integrating FFMPEGAPI.net into your projects today and elevate your video content.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free