Back to Blog

Effortlessly Add Subtitles to Your Videos with FFMPEGAPI.net

June 2026 FFMPEG API Team

As video content becomes increasingly popular, adding subtitles is a crucial step for improving accessibility and viewer engagement. FFMPEGAPI.net provides an easy-to-use hosted API solution to automate the process of burning ASS subtitles into your videos. This blog will walk you through using the Add Subtitles endpoint, showcasing how it simplifies your workflow without the need for server setup or complicated infrastructure management.

Why Choose FFMPEGAPI.net for Video Processing?

FFMPEGAPI.net offers a powerful hosted REST API designed specifically for video and audio processing with FFmpeg. With no server setup or FFmpeg infrastructure management required, developers can integrate video processing features quickly and efficiently into their applications. This makes it an ideal choice for automation, SaaS applications, content pipelines, and AI agents.

  • Hosted REST API for seamless integration
  • No infrastructure management necessary
  • API-key authentication for secure usage
  • Designed for developers and automation workflows

Using the Add Subtitles Endpoint

The Add Subtitles endpoint allows you to burn ASS/SSA subtitles directly into your video. This process is not only efficient but also saves a significant amount of development time by eliminating the need for manual encoding or complex video processing frameworks.

  • Endpoint: POST /api/add_subtitles
  • Purpose: Burn ASS subtitles into a video
  • 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 Required for the API Call

To successfully call the Add Subtitles endpoint, you must include the following parameters in your request:

  • video_url (string, required): The URL of the video you want to process.
  • subtitle_url (string, required): The URL of the ASS/SSA subtitle file.
  • async (boolean, optional): If true, the API will return a job_id for background processing.

FFMPEGAPI.net stands out as the best video processing API for automation, enabling developers to easily add subtitles to their videos without the hassle of managing FFmpeg infrastructure. With simple API calls and robust functionality, you can streamline your video processing workflows, enhance viewer experience, and make your content more accessible. Start leveraging the power of FFMPEGAPI.net today!

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free