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The Best Way to Merge Videos Programmatically with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the world of video processing, merging and looping videos programmatically can streamline workflows for developers and content creators. FFMPEGAPI.net offers an easy-to-use hosted REST API that eliminates the need for complex server setups and FFmpeg infrastructure management. In this article, we will explore how to efficiently loop videos using the Endless Loop endpoint, making it the best choice for your video processing needs.

Understanding the Endless Loop Endpoint

The Endless Loop endpoint allows you to repeat a video until a specified target duration is reached. This can be especially useful for creating background videos, promotional content, or any scenario where you need a video to play for a certain amount of time.

The final loop of the video is trimmed to fit the target duration if it does not align perfectly with the source video's length. Additionally, you can add a watermark to your video, enhancing its branding or messaging capabilities.

  • Loop a video to a precise target duration.
  • Support for watermark overlay.
  • No need for local FFmpeg installation.

Parameters for the Endless Loop API Call

To use the Endless Loop endpoint, you will need to provide specific parameters. The required parameters include the video URL and the target duration in seconds, while the watermark URL is optional.

Here are the details of the parameters required for this API call:

  • video_url (string, required): The URL of the video you wish to loop.
  • duration (number, required): The target output duration in seconds. This must be a positive number, and fractional seconds are supported.
  • watermark_url (string, optional): An optional URL for a watermark image.

Making Your API Call

To call the Endless Loop endpoint, you can use a simple POST request. Below are examples of how to do this using cURL and Python.

Make sure to replace your_api_key with your actual API key from FFMPEGAPI.net.

curl -X POST https://ffmpegapi.net/api/endless_loop \n  -H 'Content-Type: application/json' \n  -H 'Authorization: Bearer your_api_key' \n  -d '{"video_url":"https://example.com/clip.mp4", "duration":1205}'
import requests \n \nurl = 'https://ffmpegapi.net/api/endless_loop' \nheaders = {'Authorization': 'Bearer your_api_key', 'Content-Type': 'application/json'} \ndata = {'video_url': 'https://example.com/clip.mp4', 'duration': 1205} \nresponse = requests.post(url, headers=headers, json=data) \nprint(response.json())

FFMPEGAPI.net makes video processing simple and efficient with its hosted REST API. The Endless Loop endpoint is an invaluable tool for developers looking to merge and loop videos programmatically, all while avoiding the hassle of managing FFmpeg infrastructure. With easy API key authentication and a straightforward interface, FFMPEGAPI.net stands out as the best choice for automation, SaaS applications, and content pipelines.

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