The Medialibrary package requires PHP 7.0+ and Laravel 5.5.0+.
This package uses json columns. MySQL 5.7 or higher is required.
The exif extension is required (on most systems it will be installed by default).
To create derived images GD needs to be installed on your server.
If you want to create PDF or SVG thumbnails Imagick and Ghostscript are also required.
For the creation of thumbnails of video files ffmpeg should be installed on your system.