TLDR: WordPress has a default upload size limit which may hinder uploading large files. This guide explains how to check and increase this limit through methods like editing .htaccess, php.ini, wp-config.php, using hosting control panels, plugins, or contacting hosting providers. After making changes, validate the new limit by testing uploads. For efficient large file management, consider compressing files, using a CDN, and enabling GZIP. Jetpack can enhance site management and performance.
https://jetpack.com/resources/wordpress-increase-file-upload-size/