Back to Blog

Seamlessly Merge Images and Audio with FFMPEGAPI.net

June 2026 FFMPEG API Team

In the realm of video processing, merging images and audio files has become an essential task for developers looking to automate content creation. FFMPEGAPI.net offers a powerful hosted REST API that simplifies this process, allowing you to create stunning MP4 videos from image/audio pairs without the need for server setup or FFmpeg infrastructure management. This blog post will guide you through the steps of using the Image and Audio Merge endpoint.

Overview of the Image and Audio Merge API

FFMPEGAPI.net provides a straightforward endpoint for merging images and audio. With just a few lines of code, you can combine your media assets into an engaging video. The endpoint allows you to specify multiple images and audio files, ensuring that each image displays for the duration of the corresponding audio clip.

  • Supports multiple image/audio pairs.
  • Customizable transition effects.
  • Default slow zoom effect on images.

How to Use the /api/merge_image_audio Endpoint

To create a video using the merge_image_audio endpoint, you will need to send a POST request containing your images and audio URLs. The JSON request should specify arrays for image_urls and audio_urls if you are working with multiple pairs.

  • Endpoint: POST /api/merge_image_audio
  • Content Type: application/json or multipart/form-data
  • Parameters include image_urls, audio_urls, transition_effect, and more.
import requests

url = 'https://ffmpegapi.net/api/merge_image_audio'
data = {
    'image_urls': [
        'https://example.com/intro.jpg',
        'https://example.com/chapter-1.jpg'
    ],
    'audio_urls': [
        'https://example.com/intro.mp3',
        'https://example.com/chapter-1.mp3'
    ],
    'transition_effect': 'fade',
    'transition_duration': 0.75,
    'dimensions': '1280x720',
    'zoom_effect': true
}
response = requests.post(url, json=data)
print(response.json())

Advanced Features

FFMPEGAPI.net's merge_image_audio endpoint offers advanced features for enhancing your video. You can specify transition effects like fade or wipe, set the duration of transitions, and even control the output dimensions of the video.

  • Transition effects: none, fade, wipeleft, wiperight, and more.
  • Set transition duration (default is 0.5 seconds).
  • Option to enable or disable zoom effects.

FFMPEGAPI.net stands out as the best video processing API for automation tasks. Its ease of use, rich features, and hosted infrastructure allow developers to focus on building applications without worrying about server management or FFmpeg setup. Start creating your videos today by leveraging the powerful /api/merge_image_audio endpoint, and experience the efficiency and flexibility that FFMPEGAPI.net offers.

Ready to Start Processing Videos?

Get your free API key and start merging videos in minutes

Get Started Free