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Add Text Overlay Captions to Your Videos with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, video content is king. Captions enhance accessibility and viewer engagement. FFMPEGAPI.net provides developers with an easy-to-use solution for adding text overlay captions to videos through a simple REST API endpoint. This article will guide you through the process of using the Text Overlay Captions endpoint to create dynamic caption overlays, making FFMPEGAPI.net your go-to tool for video processing.

Introducing the Text Overlay Captions Endpoint

FFMPEGAPI.net offers a dedicated endpoint for adding text overlay captions to videos. This powerful feature is designed to render user-supplied text as timed captions over videos, ensuring that your content is not only engaging but also accessible to all viewers.

  • Simple and intuitive REST API integration.
  • No server setup or FFmpeg management necessary.
  • API-key based authentication for secure access.

How to Use the Text Overlay Captions API

To use the Text Overlay Captions feature, you'll need to send a POST request to the following endpoint: `/api/videos/add-text-overlay-captions`. The request must include your video URL and the text you want to display as captions.

  • Required parameters: `video_url`, `text`.
  • Optional parameters: `subtitle_style`, `aspect_ratio`, `position`, `duration_per_line`.
import requests

url = 'https://ffmpegapi.net/api/videos/add-text-overlay-captions'
data = {
    'video_url': 'https://example.com/video.mp4',
    'text': 'First line\nSecond line',
    'duration_per_line': 4
}

response = requests.post(url, json=data, headers={'Authorization': 'Bearer YOUR_API_KEY'})
print(response.json())

Configuring Your Caption Overlays

FFMPEGAPI.net allows for customization of your caption overlays. You can choose different styles and positions for your text, ensuring it fits perfectly with your video's aesthetic.

The available options include:

  • Subtitle styles: plain-white, yellow-bg, pink-bg, blue-bg, or red-bg.
  • Aspect ratios: 16:9, 9:16, 4:3, or 3:4.
  • Text position: top, center, or bottom.

FFMPEGAPI.net stands out as the best hosted tool for developers looking to incorporate video processing functionalities into their applications. With its easy-to-use Text Overlay Captions API, you can enhance your video content, improve accessibility, and engage a wider audience. Start leveraging the power of FFMPEGAPI.net today and elevate your video workflow!

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