16:9 is the ratio. vShare today is using the format of 4:3 ratio.

4:3 is the "old" TV format, but most cameras, TV's etc now film in 16:9 ratio.

This video is 16:9
http://www.vikingslides.com/video/ry...2005-12-12.wmv

This is 4:3
http://www.vikingslides.com/video/AirEuropaB777.wmv