php file upload size limits
By default, php allows 2-8 MB file size uploads. These days, you need probably 1-2 GB in case someone wants to upload a video.
[edit] /etc/php/php.ini
find other versions:
find /etc/php -name "php.ini*" -name
edit those as well
Search for these entries and change them as shown:
post_max_size = 2000M
upload_max_filesize = 2000M