Hi. I'm using XMediaRecode to convert 1280x720 wmv files to 720x408 avi files (with Divx codec). XMediaRecode allows me to set the height/width but, within the settings of Divx, there are buttons for Auto Resize, Custom Resize and No Resize. I've been selecting No Resize (as the new avi file is what I want, 720x408) but, out of curiosity, why do the Divx settings offer separate resize options?