Answer:
UPI.com and UPIU.com can support most common video/audio formats with sizes up to 100MB. This includes Flash presentations and movies.
Standard acceptable video formats include: MOV, AVI, WMV, FLV and MPG, MP4.
For Viewing & General Interaction with UPIU:
Just about any browser released in the past 5 or so years should work. This includes IE6+, Firefox 1.5+, Opera, Safari, Google Chrome, Most mobile devices, etc.
Browsers that have been tested and proven for posting audio & video include: IE6,7,8 Safari 2.5,3,4, Firefox 1.5,2,3.
UPIU recommendations for best overall appearance and experience:
As with many modern web applications, UPIU takes advantage of many recent advances allowing for improved appearance and better user experience. To get the full benefit of these advances, and to see UPIU at its full potential, it's recommended that the current versions of the major browsers be utilized.
These include: Firefox 2.5,3, Safari 3,4, IE 7,8
*Note: UPIU cannot at this time support soundslide packages.