This no doubt sounds like a driver/video card problem. If reinstalling flash player, silverlight, drivers, and other software you have doesn't solve it, it might be a hardware problem.
What kind of computer do you have? In particular, OS and video card.
Also...see if it happens in VLC video player.
[CENTER][URL="http://www.jeepforum.com/forum/f197/breckenridge-redemption-build-thread-3111777/#post29271881"]Build Thread: "The Jeep" 1995 ZJ Laredo I6 212k. 20 years 1 family.[/URL]
The New DD: 2015 Dodge Charger SXT Rallye[/CENTER]