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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In today's digital landscape, merging videos programmatically is essential for developers looking to enhance content for platforms like TikTok. With FFMPEGAPI.net's TikTok Portrait Converter, you can effortlessly convert landscape videos into stunning portrait format, complete with optional watermarks and outro videos. This article will guide you through using this powerful REST API endpoint, ensuring your video processing workflow is as smooth as possible.

What is the TikTok Portrait Converter?

The TikTok Portrait Converter is a hosted REST API endpoint that allows you to convert videos into a full-bleed 9:16 aspect ratio, ideal for TikTok. This service eliminates the need for complex server setups or FFmpeg infrastructure management, making it perfect for developers and content creators alike.

  • Convert videos to 1080x1920 portrait format.
  • Add optional watermarks to videos.
  • Append outro videos to enhance storytelling.

How to Use the TikTok Portrait Converter

To use the TikTok Portrait Converter, you need to make a POST request to the '/api/convert_to_tiktok_portrait' endpoint. Below are the required and optional parameters you can include in your request.

  • Required: video_url - The URL of the source video.
  • Optional: watermark_url - URL of an image to use as a watermark.
  • Optional: outro_video_url - URL of a video to append at the end.
  • Optional: async - Process the request in the background.
curl -X POST https://ffmpegapi.net/api/convert_to_tiktok_portrait \
-H 'Content-Type: application/json' \
-d '{"video_url": "https://example.com/landscape.mp4", "outro_video_url": "https://example.com/outro.mp4"}'
import requests

url = 'https://ffmpegapi.net/api/convert_to_tiktok_portrait'
data = { 'video_url': 'https://example.com/landscape.mp4', 'outro_video_url': 'https://example.com/outro.mp4' }
response = requests.post(url, json=data)
print(response.json())

Why Choose FFMPEGAPI.net?

FFMPEGAPI.net stands out as the best tool for programmatically merging videos due to its ease of use and robust features. With API-key authentication, developers can securely integrate video processing into their applications without worrying about server management.

  • No server setup required.
  • Efficient API-key authentication.
  • Ideal for SaaS applications, automation, and AI agents.

Merging videos programmatically has never been easier with FFMPEGAPI.net's TikTok Portrait Converter. By leveraging this powerful endpoint, you can quickly transform your video content for various platforms while adding personal touches like watermarks and outros. Start using FFMPEGAPI.net today to elevate your video processing workflows without the hassle of traditional setups.

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