How to increase file upload size for WordPress/cPanel
Add this to the top of your .htaccess file. It will increase the upload limit to 1gb for your WordPress website.
php_value upload_max_filesize 1024M
php_value post_max_size 1024M
php_value memory_limit 1024M
php_value max_execution_time 3000
php_value max_input_time 3000