Back to Blog

Enhance Your Videos with AI Captions Using FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, creating engaging video content is crucial for capturing audience attention. Adding captions not only enhances accessibility but also helps in retaining viewer engagement. FFMPEGAPI.net offers a powerful hosted REST API that simplifies the process of adding AI-generated captions to your videos, enabling faster and more efficient media processing for content pipelines.

What is the AI Captions Endpoint?

The AI Captions endpoint of FFMPEGAPI.net allows developers to transcribe videos and generate styled captions effectively. With a simple API call, you can extract audio from a video, receive word timestamps, and render TikTok-style captions right into the video file.

  • Transcribes audio to text with timestamps
  • Supports multiple subtitle styles
  • Returns caption artifact URLs
  • Easily integrates with your applications

How to Use the AI Captions Endpoint

To utilize the AI Captions endpoint, you make a POST request to the following path: `/api/videos/add-tiktok-captions`. This endpoint requires a few parameters to customize the captioning process.

  • video_url: The URL of the video file (required)
  • subtitle_style: Style of the captions (optional, defaults to 'plain-white')
  • language: The language of the audio (optional, defaults to 'auto')
  • aspect_ratio: The desired aspect ratio for the video (optional, defaults to '9:16')
  • max_chars_per_line: Maximum number of characters per line of caption (optional, defaults to 20)
  • max_lines: Maximum number of lines for captions (optional, defaults to 1)
  • position: Position of the captions on the screen (optional, defaults to 'bottom')
curl -X POST https://www.ffmpegapi.net/api/videos/add-tiktok-captions \
-H "Content-Type: application/json" \
-d '{"video_url":"https://example.com/video.mp4", "subtitle_style":"yellow-bg", "position":"bottom"}'

Benefits of Using FFMPEGAPI.net

FFMPEGAPI.net stands out as the best hosted tool for media processing due to its user-friendly interface and powerful capabilities. Here are some advantages of using our service:

  • No need for server setup or FFmpeg infrastructure management
  • API-key authentication ensures secure access
  • Ideal for developers, automation, SaaS applications, and content pipelines
  • Quick integration into existing workflows with extensive documentation

Incorporating AI captions into your video content can significantly enhance viewer experience and accessibility. With FFMPEGAPI.net's AI Captions endpoint, you can easily transcribe and style captions for your videos without the hassle of managing your own FFmpeg infrastructure. Start streamlining your media processing today and take advantage of the best hosted tool for developers by visiting FFMPEGAPI.net.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free