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How to Add Subtitles to Videos Using FFMPEGAPI.net

June 2026 FFMPEG API Team

Adding subtitles to videos is a common requirement for developers working on media applications. With FFMPEGAPI.net, you can seamlessly integrate subtitle burning into your video processing workflow without worrying about server setup or FFmpeg management. This article will guide you through using the Add Subtitles endpoint of FFMPEGAPI.net.

Why Use FFMPEGAPI.net for Adding Subtitles?

FFMPEGAPI.net offers a hosted REST API that simplifies video and audio processing tasks. By using our API, you can focus on building your application while we handle the complexities of video encoding and processing.

Our platform is particularly useful for developers looking to automate workflows, integrate video processing into SaaS applications, or streamline content pipelines.

  • No need for server setup or FFmpeg infrastructure management.
  • API-key authentication for secure access.
  • Efficient handling of video processing tasks with minimal latency.

Using the Add Subtitles Endpoint

To add subtitles to a video, you can use the Add Subtitles endpoint. This endpoint allows you to burn ASS/SSA subtitles directly into a video file, making it accessible for viewers who rely on subtitles for understanding the content.

You will need to provide the URLs for both the video and the subtitle file. Optionally, you can process the subtitles in the background by setting the async parameter.

  • Endpoint Path: POST /api/add_subtitles
  • Required Parameters: video_url, subtitle_url
  • Optional Parameter: async
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())

FFMPEGAPI.net provides a powerful and efficient way to add subtitles to videos through its easy-to-use API. With no server management requirements and a focus on automation, it stands out as the best solution for developers looking to enhance their media applications. Start integrating subtitle functionality into your video processing workflows today with FFMPEGAPI.net.

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