Microsoft KB Archive/941102

= When you watch Live TV or Recorded TV in Windows Media Center on a computer that is running Windows Vista, the picture may appear distorted or pixilated =

Article ID: 941102

Article Last Modified on 8/27/2007

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APPLIES TO


 * Windows Vista Home Premium 64-bit Edition
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Home Premium
 * Windows Vista Ultimate

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SYMPTOMS
Consider the following scenario. You have a computer that is running Windows Vista Ultimate or Windows Vista Home Premium. The computer receives digital cable by using a CableCARD. However, when you watch Live TV or Recorded TV in Windows Media Center, you may experience macroblocking or blocking artifacts. For example, square sections of the picture are not displayed correctly. These sections may appear to be missing, or they may appear as a single block of color. Additionally, the picture may appear distorted or pixilated. If you rewind the video, the distortion appears again at the same location in the video.

This problem is most likely to occur when one of the following conditions is true:
 * You watch or record TV from a high definition (HD) channel.
 * The motion of images on the screen is very fast.
 * Scenes changes occur quickly.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
No prerequisites are required.

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 64-bit versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbtshoot kbbug kbfix kbqfe kbexpertiseinter kbhotfixserver kbwinvistapostrtmfix KB941102

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