zbxe/modules/editor/components/multimedia_link|multimedia_link.class.php

Line 49~50..
if(!$width) $width = 402;
if(!$height) $height = 322;
 
zbxe/modules/editor/components/multimedia_link/tpl|popup.html

Line 24.. id="multimedia_width" value="402"
Line 28.. id="multimedia_height" value="322"