Other way need editing .htaccess file.

To prevent access to video, upload .htaccess file in video folder.

To deny IP address 200.189.78.1 add following to end of .htaccess


Code:
deny from 200.189.78.1
To deny all IP 200.189.0.0 to 200.189.255.255 add

Code:
deny from 200.189