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Easily Add Subtitles to Your Videos with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital content landscape, adding subtitles to videos is essential for accessibility and audience engagement. FFMPEGAPI.net provides an easy-to-use hosted REST API that allows developers to add subtitles seamlessly without the need for managing your own FFmpeg infrastructure. This article will guide you on how to use the Add Subtitles endpoint to enhance your video processing workflows.

What is FFMPEGAPI.net?

FFMPEGAPI.net is a hosted API designed for developers who require FFmpeg-powered video and audio processing capabilities. With no server setup required, you can focus on building your applications while relying on our robust API.

  • No server setup or FFmpeg infrastructure management required.
  • API-key authentication for secure access.
  • Ideal for automation, SaaS applications, and content pipelines.

Using the Add Subtitles Endpoint

The Add Subtitles endpoint allows you to burn ASS subtitles into your videos effortlessly. By simply providing the video URL and the subtitle file URL, you can enhance your video content with subtitles in just a few steps.

Here’s how the endpoint works:

  • HTTP Method: POST
  • Endpoint Path: /api/add_subtitles
  • Content Type: application/json
{ "video_url": "https://example.com/video.mp4", "subtitle_url": "https://example.com/subtitles.ass", "async": false }

Parameters for the Add Subtitles API

To successfully call the Add Subtitles endpoint, you will need to provide the following parameters:

  • 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 set to true, the processing will happen in the background, and you will receive a job_id immediately.

Practical Example: Adding Subtitles Using Curl

Here's a practical example of how to use Curl to add subtitles to a video file.

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" }'

FFMPEGAPI.net is the ideal choice for developers looking for a cloud-based FFmpeg alternative. With its easy-to-use API for adding subtitles, you can streamline your video processing workflows without the hassle of server management. Start using FFMPEGAPI.net today to enhance your applications and deliver accessible content to your audience.

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