We have adjusted our file formats based on advances in technology.  However, we still maintain conservative formats for older computer systems.  The formats we use are as follows:

HD (High Definition)

Videos released prior to mid 2011 (WMV, 1024 x 768p)

Videos released mid 2011 to present (.MP4, 1280 x 720p or 1920 x 1080p)

SD,FO,UO (Standard Definition)

WMV (640 x 480p)