Windows Media Center may display Low Bit Rate overlay messages on a computer that is running Windows 7

Issue that is fixed in this update

On a computer that is running Windows 7, you use Windows Media Center together with an analog TV tuner to watch live analog TV. In this situation, you receive intermittent Low Bit Rate overlay messages in Windows Media Center.

Windows Media Center monitors the incoming bit rate of live TV. Without this monitoring, the bit rate drops very low when the analog TV input is weak or does not have a signal. This causes a black screen or a static screen to be displayed. With this monitoring, Windows Media Center displays an overlay message to indicate a possible issue with the incoming bit rate when the analog TV input is weak or does not have a signal.

However, the method that is used to monitor the incoming bit rate on analog signals is too sensitive. This may cause a false detection of a low bit rate.


Note Many regions have switched over to digital broadcasting. There are hardware configurations in digital broadcasts to convert the digital signal to an analog signal. These configurations can include set top boxes and digital to analog-switch-boxes.

Update information

How to obtain this update

The following files are available for download from the Microsoft Download Center:
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

No prerequisites are required.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 file information notes

• The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
  

  Version	Product	Milestone	Service branch
  6.1.760 0.16xxx	Windows 7	RTM	GDR
  6.1.760 0.20xxx	Windows 7	RTM	LDR

• GDR service branches contain only those fixes that are widely released to address widespread, extremely important issues. LDR service branches contain hotfixes in addition to widely released fixes.
• The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

For all supported x64-based versions of Windows 7

For more information about software update terminology, 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

Additional file information

Additional file information for Windows 7

Additional files for all supported x86-based versions of Windows 7

Additional files for all supported x64-based versions of Windows 7