The best way to play the clip after you have downloaded it is to grab the excellent free VLC movie player available at VideoLAN.org
VLC has an extended GUI (ctrl-G) for REAL TIME brightness, contrast, color adjustments. It has also has many other great features including slow motion: want to slow that clip down for a better look - just hit the minus (-) key on your numpad, (+) to speed up.
For speed, quality and price (free), the best picture viewer is 'Irfan View'. You can get the latest version through their website at Irfanview.com