Whatever video I download off youtube now will not play on realplayer. The file is there and it has the right time length, but it wont play, and Im just now starting to have this problem after a lot of use before
Select View/Preferences... from your menus.
Go to the Performance tab (see Performance Preferences).
Find Video card compatibility at the bottom of the tab.
Deselect (uncheck) Use optimized video display.
Close RealPlayer and restart it. (If you have StartCenter running, you will need to close this as well to fully restart RealPlayer. To close StartCenter, right-click on the StartCenter icon and select Close StartCenter. StartCenter will restart when you launch your Player again).
Attempt to play the video again.