Currently we do not support wmv files. Here are a few easy steps to convert these files:
Download Handbrake: http://handbrake.fr/downloads.php
Install and open Handbrake. Go to Tools > Options and change the Output Files: Default Path to a location you want your converted videos saved.
On the right, select the Apple > Universal preset
Using the Source button up top, select the video you wish to encode.
When ready, press Start.
Once the encoding process has concluded, retry adding the encoded video to the Intranet site.