Media Player 9 Problem

[bevills1]

Media Player 9 plays some video that appears normally, but for some video it appears to play what looks like a negative of the video. Media Player 7.1 plays all video normally including the ones that appear as negatives for Media Player 9, and the K-Lite Codec Pack is installed for both players. Has anybody else had this kind of problem or know how to fix it?

Edit: I just noticed there's a duplicate video adapter in Device Manager. Could this be causing my problem with some video, and is there a way to fix it if that's the cause? It shows the driver expected to be there for the Radeon 9550 adapter, and it shows the exact same adapter with "Secondary" added. I tried uninstalling each one, one at a time, but it reappears after reboot.

I found a couple of similar instances of duplicate video adapters via Google search for which one thread had no solution, and the fix at the other thread was reformat and reinstall. Does anybody know an easier fix than a reinstall?

[Krispy Kritter]

The duplicate video adapter isn't an issue. Windows is likely listing your video adapter twice because it has dual outputs.

As for your playback issue, it is most likely a codec issue. It has been noted here numerous times to NOT use codec packs. With that said, you will need to do a little investigating to try and resolve the issue. What type of videos are having the problem? (ie: avi, mpg, etc.) Does it occur for all files of that type (ie: all avi files)?

[bevills1]

I'm unsure of the file type, but it's streaming video from a web site. It's odd you say it's been noted here to not use codec packs because I read on another forum where codec packs were recommended. Do you think uninstalling the K-Lite codec pack might fix the problem?

However, it appears the duplicate video adapter may be the cause of problems, and there's no duplicate adapter when booted to Win2k on the same system. I tried disabling the "Secondary" adapter, and the problem persisted. Then I tried enabling the "Secondary" adapter and disabling the primary adapter that resulted in video playing normally, but it also resulted in much slower scrolling plus a horizontal line rippling across the screen while scrolling. I'm beginning to think I may have to reinstall Windows to fix the problem.

Edit: Well it turns out the fix was as simple as updating the video driver to the latest one for the adapter dated March 2009 from the ATI site. I'd have thought the Win2k and WinXP drivers on the install DVD would have been quite similar and that would not have been the problem, but obviously I was wrong. What are advantages/disadvantages of WMP11 compared to WMP9, and would upgrade to WMP11 be recommended?

[bevills1]

I stand corrected. The driver update only worked for 1 or 2 videos, and the problem recurred. Next I tried WMP11, and all videos play normally now which seems to indicate the problem was likely a WMP9 bug.