How to increase maximum file upload size limit in Wordpress?

Question

WordPress

Hello. I need to upload video files up to 800 MB to my Wordpress site. WordPress has been configured by default so that the maximum file upload size has been set to 2 MB. I read on the Internet that in order to increase the limits there are 3 options:
1) Correct the PHP settings
2) Register the settings in the .htaccess file.
3) Register the settings in the site theme file functions.php
Sources:
- https ://wp-lessons.com/kak-uvelichit-maksimalnyiy
-... As a result, the largest file that I have been able to upload at the moment is 128 MB - everything above is not loaded. The scale goes on and resets by 3/4 and starts over and it turns into a vicious circle.
By the way, after making the php settings, on the page for uploading files to WordPress, the inscription with the limit changed and became instead of 2 mb the previous 800 mb. That is, WordPress itself confirmed that the changes were taken into account by them, but in fact they were taken into account, but not quite as I indicated in the php settings. I suspect that somewhere some setting does not allow you to still upload files larger than 128 MB.
Question: What is the problem? Maybe some other settings need to be specified somewhere?

Answer 1

The problem in my case was not with the PHP or CMS settings, the problem was in the settings of the nginx web server of my virtual dedicated server (file /etc/nginx/nginx.conf), or more precisely, in the client_max_body_size directive that sets the maximum allowable size of the request body client. I increased this parameter to the required volume (800 MB), and it was set to 128 MB. Now everything works as it should.