I have a red line running vertically down the middle of the screen when playing movies with media player on windows 7. How do I correct this?

Question

This happens with Windows media player and windows media player classic.  I can us vlc and I do not get the red vertical line running down the screen.  No matter what movie I play the line is there.  But it does not appear untile I actually push play.  When I originally open the player I have a blank black screen.  But once I push play the movie starts and the red line is there.  Fast forward, rewind and pause, the line remains.  How do I solve this problem?

Answer 1

Did you install a codec pack or video software? That may be the cause.

Did you install W7 as an upgrade to Vista?

One other source of trouble (not likely) is an incompatible video card driver.

Also Catalyst settings will be responsible for such a line.

Answer 2

I have noticed that with Win7 after playing with the Catalyst settings in 'Avivio video ' you will see 'all settings ', then scroll all the way down and there will be a fieldset named 'video demo mode '.

1. If you have 'video demo mode ' settings 'enable demo mode ' check marked with split screen mode as an option, you will see a red line. To remove it, simply uncheck 'enable demo mode ', press 'apply ' and then close with 'ok '.
2. sometimes, you may see a green line, which is a driver for the video card, FFDSHOW or some other codec messed up, or the video card could be damaged, not pushed in all of the way in a pci, agp, or pci-e slot.

I went into my AMD Radeon Settings app and selected the tab "Video". Up in the top, right, corner, sure enough, there is a setting for demo. Mine was set to "Demo On". When I changed it to "Demo OFF", the red line disappeared. I just upgraded my AMD drivers to this latest version and then noticed the problem. Apparently, the "Demo" was on by default because I never changed any settings. Thanks you for the tip. Fixed my problem.

Answer 3

This was it with me! Won't see the change until the video's playing though. Must have turned it on by accident when making a new tab in my web browser.

Answer 4

On the new gray Radeon Settings screen, select the "video" option and you'll find the "Demo on - off" switch to the top right near the window buttons. Set it to "Demo off" and the line will go away.

Answer 5

Thank you very much